All 958 GRE Vocabulary Words

Graduate Record Examination vocabulary organized alphabetically. Learn more about GRE prep

High Frequency Words Warm-up Words Intermediate Words Challenge Words Quantitative Reasoning

A B C D E F G H I J K L M N O P Q R S T U V W Z

A

abaseTo lower in rank, prestige, or esteem; to degrade or humble.GRE abateto become less intense or widespread; to reduceGRE · SAT aberrantdeviating from what is normal or expectedGRE · SAT abeyancea state of suspension or temporary inactivityGRE · SAT abjureTo formally renounce or reject a belief, cause, or claim.GRE · SAT abnegateTo renounce or reject something desired or valuable, especially through self-den…GRE abrogateTo formally abolish or annul a law, agreement, or custom by authoritative action…GRE · SAT abscondto leave secretly and hurriedly, typically to avoid detectionGRE · SAT absoluteIn mathematics, the absolute value of a number is its distance from zero on the …GRE · SAT absolveTo declare free from blame, guilt, or responsibility.GRE abstainTo deliberately choose not to do or have something; to refrain.GRE · SAT · TOEFL abstemiousmoderate in eating and drinking; restrainedGRE · SAT abstractExisting in thought or as an idea but not having a concrete physical existenceGRE · SAT · TOEFL · IELTS abstruseExtremely difficult to understand; obscure and recondite.GRE · SAT accoladeAn award or expression of praise and admiration.GRE · SAT accompliSomething that has already been accomplished and is irreversible, used in the ph…GRE accrueTo accumulate or receive over time, especially benefits, profits, or advantages.GRE · SAT accruedHaving been accumulated or gathered over a period of time.GRE acerbicSharp, forthright, and harsh in tone or manner, especially of speech or commenta…GRE · SAT acrimoniousAngry and bitter in tone or disposition, especially in speech or debate.GRE · SAT acumenThe ability to make good judgments and quick decisions, especially in a particul…GRE adamantRefusing to be persuaded or to change one's mind; utterly unyielding.GRE · SAT additionA basic arithmetic operation that combines two or more numbers to find their tot…GRE · TOEFL adjacentIn geometry, lying next to or sharing a common side, vertex, or boundary without…GRE · SAT · TOEFL · IELTS adjunctSomething added or attached in a supplementary rather than essential capacity.GRE · SAT admonishTo warn or reprimand someone firmly but not harshly.GRE · SAT adulterateto make something less pure by adding an inferior substanceGRE · SAT aestheticconcerned with beauty or appreciation of beauty; artisticGRE · SAT aggrandizeto increase in power or wealth; to make appear greaterGRE · SAT alacritybrisk and cheerful readiness; eagernessGRE · SAT algorithmA step-by-step procedure or set of rules for solving a mathematical problem or p…GRE · SAT · IELTS alleviateto make easier or less severe; to reduce pain or distressGRE · SAT · TOEFL allureto attract or tempt someone with the promise of something desirableGRE · SAT amalgamA mixture or blend of different elements or qualities.GRE amalgamatejoined together into a wholeGRE ambiguousOpen to more than one interpretation; having a double meaning.GRE · SAT · TOEFL · IELTS ambivalencethe state of having mixed feelings or contradictory ideasGRE · SAT ambivalentHaving mixed feelings or contradictory ideas about something or someone.GRE · TOEFL · IELTS ambrosiaSomething extremely pleasing to taste or smell; by extension, anything supremely…GRE ameliorateto make something better; to improveGRE · SAT anachronismsomething or someone placed in the wrong time period; an error in timingGRE · SAT analogouscomparable in certain respects; having similar featuresGRE · SAT · TOEFL analogyA comparison between two things for the purpose of explanation or clarification.GRE · SAT · TOEFL · IELTS analyticIn mathematics, relating to or using analysis, particularly the use of algebraic…GRE anarchya state of disorder; absence of government or controlGRE · SAT anathemaSomething or someone that is intensely disliked or loathed.GRE anomalousdeviating from the general or common order or typeGRE anomalySomething that deviates from what is standard, normal, or expected.GRE · SAT · TOEFL antediluvianof or belonging to the time before the biblical flood; extremely oldGRE · SAT anthologyA published collection of literary works, such as poems or stories, chosen by a …GRE · SAT antipathya strong feeling of dislike or opposition; aversionGRE · SAT apathylack of interest, enthusiasm, or concern; indifferenceGRE · SAT aplombSelf-confident composure and poise, especially under pressure.GRE apocryphalOf doubtful authenticity, although widely circulated as being true.GRE · SAT apothemThe perpendicular distance from the center of a regular polygon to the midpoint …GRE · SAT apotheosisThe highest point of development or the perfect example of something; the elevat…GRE · SAT appeaseto pacify or calm someone; to satisfy a demand or needGRE · SAT appriseto inform or notify someone; to make awareGRE · SAT approbationapproval or consent; official sanction or agreementGRE · SAT appropriatesuitable or proper for a particular situation; to take or adoptGRE · SAT · TOEFL · IELTS arcA portion of the circumference of a circle or other curve.GRE · SAT archaicVery old or old-fashioned; belonging to a much earlier period.GRE ardorfeelings of great warmth and intensityGRE arithmeticThe branch of mathematics dealing with the properties and manipulation of number…GRE · SAT arrestTo stop or check the progress or movement of something.GRE artlesssimple and natural; without cunning or deceitGRE ascertainTo find out or learn with certainty through examination or investigation.GRE asceticsomeone who practices self denial as a spiritual disciplineGRE asperityHarshness or severity of tone or manner.GRE aspersionAn attack on the reputation or integrity of someone or something.GRE assiduousmarked by care and persistent effortGRE assimilateTo absorb and integrate people, ideas, or information into a wider society or st…GRE · TOEFL · IELTS assuageprovide physical relief, as from painGRE astringentSharp or severe in manner or style; cutting.GRE asylumProtection or shelter from danger, especially political protection granted by a …GRE asymptoteA line that a curve approaches arbitrarily closely but never actually reaches or…GRE · SAT audaciousdisposed to venture or take risksGRE augmentTo make something greater by adding to it; to increase or supplement.GRE austereof a stern or strict bearing or demeanorGRE autonomousHaving the freedom to govern itself or control its own affairs; independent.GRE · TOEFL · IELTS avaricereprehensible acquisitiveness; insatiable desire for wealthGRE aversionA strong feeling of dislike or disinclination toward something.GRE axisA fixed reference line used in a coordinate system to specify the position of a …GRE · SAT

B

bardA poet, especially one who writes lyrical or epic verse.GRE bayesianRelating to a statistical method in which probabilities are updated as new evide…GRE behemothSomething enormous in size or power.GRE bellicoseDemonstrating aggression and willingness to fight.GRE benevolentWell-meaning and kindly; characterized by doing good.GRE · SAT benignharmless or not dangerous; kind and gentleGRE · SAT besmirchTo damage the reputation of; to sully or tarnish.GRE biliousBad-tempered or ill-natured; splenetic.GRE binomialAn algebraic expression consisting of two terms connected by a plus or minus sig…GRE · SAT bisectTo divide a line segment, angle, or shape into two equal parts.GRE · SAT blandishmentA flattering or pleasing statement or action used to persuade someone gently.GRE blitheShowing a casual and cheerful indifference considered to be improper or callous.GRE · SAT bolsterto support or strengthen; to give a boost toGRE · SAT · TOEFL bombasticostentatiously lofty in styleGRE boorishill-mannered and coarse in behavior or appearanceGRE · SAT bourgeoisBelonging to or characteristic of the middle class, typically with reference to …GRE · SAT bowdlerizeTo remove material considered improper or offensive from a text, thereby weakeni…GRE broachTo raise a sensitive or difficult subject for discussion.GRE · SAT brusqueMarkedly short and abrupt in manner or speech; rudely curt.GRE · SAT bucolicRelating to the pleasant aspects of the countryside and rural life.GRE burgeonto begin to grow or increase rapidly; to flourishGRE · SAT burnishto polish by rubbing; to make shiny or brightGRE · SAT buttressto increase the strength of; to support or reinforceGRE · SAT

C

cabalA secret political group or faction engaged in plotting.GRE cacophonya harsh, discordant mixture of soundsGRE · SAT calculateTo determine a numerical result by performing mathematical operations such as ad…GRE · SAT calculusThe branch of mathematics that studies continuous change through derivatives (di…GRE · SAT candorthe quality of being open, honest, and direct; franknessGRE · SAT canonA collection of works or principles accepted as genuine, authoritative, or repre…GRE capitulateTo cease resisting and surrender to an opponent or demand.GRE · SAT capriciousdetermined by chance or impulse rather than by necessityGRE · SAT captiousTending to find fault or raise petty objections.GRE cardinalOf the greatest importance; fundamental.GRE caricatureA ludicrously exaggerated representation of someone or something.GRE cartesianRelating to the coordinate system that specifies each point in a plane by a pair…GRE castigateTo reprimand someone severely; to criticize harshly.GRE · SAT castigationverbal punishmentGRE catalystA substance that increases the rate of a reaction without being consumedGRE · SAT · TOEFL catharsisThe process of releasing strong or repressed emotions, resulting in relief or re…GRE · SAT caulkTo seal a joint or seam against leakage; by extension, to fill in gaps or cracks…GRE causticcapable of destroying or eating away by chemical actionGRE · SAT celestialPositioned in or relating to the sky or outer space; heavenly.GRE censureto express severe disapproval or to reprimand formallyGRE · SAT centroidThe geometric center of a shape, calculated as the average position of all point…GRE · SAT championTo vigorously support or defend a cause or person.GRE chastenTo restrain or moderate; to make someone feel subdued or humbled, often through …GRE chauvinista person with a prejudiced belief in their own superiorityGRE chicanerythe use of trickery to achieve one's purposeGRE · SAT chimeraA fanciful illusion or fabrication of the mind; an unrealizable dream.GRE churlishRude, mean-spirited, or lacking in civility.GRE circuitouslonger than the most direct way; indirect and complicatedGRE · SAT circumferenceThe distance around the outside of a circle, calculated as C = 2*pi*r, where r i…GRE · SAT circumlocutionThe use of many words where fewer would do, especially to avoid speaking directl…GRE · SAT circumscribeto draw a line or curve around; to draw a polygon around anotherGRE · SAT circumspectWary and unwilling to take risks; carefully considering all circumstances.GRE · SAT circumventTo find a way around an obstacle or rule; to overcome by ingenuity.GRE clairvoyanceThe supposed ability to perceive events beyond normal sensory contact; exception…GRE clamorA loud and confused noise, especially of people shouting; a vehement public dema…GRE clemencyMercy or leniency, especially toward an offender or enemy.GRE clienteleThe body of customers or patrons of a business or professional service.GRE cloisterTo seclude or shut away from the outside world.GRE coagulatechange from a liquid to a thickened or solid stateGRE coalesceTo come together to form one whole; to merge or unite.GRE · SAT codathe closing section of a musical compositionGRE coefficientA numerical or constant factor placed before a variable in an algebraic expressi…GRE · SAT · IELTS coerceTo compel someone to act or think in a certain way by using force, threats, or i…GRE cogentclear, logical, and convincingGRE · SAT cognizantHaving knowledge or awareness of something.GRE cognoscenteA person who has superior knowledge or understanding in a particular field, espe…GRE collinearLying on the same straight line, used to describe points that share a single lin…GRE · SAT combinatoricsThe branch of mathematics dealing with combinations, permutations, and the count…GRE commiserateTo express or feel sympathy or pity for someone's misfortune.GRE · SAT compareTo examine two or more quantities or expressions to determine their relative siz…GRE · TOEFL · IELTS compendiumA concise but comprehensive collection of information on a particular subject.GRE complacentShowing smug or uncritical satisfaction with oneself or one's achievements, ofte…GRE complaisantWilling to please others; obliging and agreeable.GRE complementA thing that contributes features which improve or emphasise another's qualities…GRE · SAT · IELTS compliantDisposed to agree with others or obey rules, often to an excessive degree.GRE compunctionA feeling of guilt or moral scruple that prevents or follows the doing of someth…GRE concaveCurving inward, like the interior surface of a sphere; in geometry, a polygon is…GRE · SAT concentricSharing the same center point, as with circles or spheres of different radii tha…GRE · SAT concessionSomething yielded or granted, especially in an argument or negotiation; an ackno…GRE conciliatorymaking or willing to make concessionsGRE concorda harmonious state of things and of their propertiesGRE condoneexcuse, overlook, or make allowances forGRE confoundbe confusing or perplexing toGRE confoundedConfused and surprised; also used to describe variables in a study that are mixe…GRE congenialPleasant and agreeable because suited to one's taste or nature.GRE · SAT congruentIn geometry, having the same shape and size so that all corresponding sides and …GRE · SAT conjectureAn opinion or conclusion formed on the basis of incomplete information; in math,…GRE · SAT conjugalRelating to marriage or the relationship between a married couple.GRE connoisseuran expert able to appreciate a fieldGRE conscientiousWishing to do what is right, especially to do one's work or duty thoroughly and …GRE consecratedMade or declared sacred; dedicated formally to a religious or divine purpose.GRE consecutiveFollowing continuously in unbroken sequence; in math, consecutive integers diffe…GRE · SAT contendTo assert something as a position in an argument; also, to struggle or compete.GRE · IELTS contentionheated disagreement; a point asserted as true in an argumentGRE · SAT contentiousshowing an inclination to disagreeGRE · TOEFL contiguousSharing a common border; touching or adjacent without interruption.GRE · SAT contritefeeling or expressing pain or sorrowGRE conundrumA confusing and difficult problem or question with no easy solution.GRE conventionA widely accepted practice, standard, or norm within a particular group or field…GRE · TOEFL · IELTS conventionalBased on or in accordance with what is generally done or believed; conforming to…GRE · TOEFL · IELTS convergemove or draw togetherGRE convertTo change a quantity from one unit, form, or system of measurement to another eq…GRE · TOEFL convexCurving outward like the exterior of a sphere; in geometry, a polygon is convex …GRE · SAT convictionan unshakable belief in something without need for proofGRE · TOEFL convolutedhighly complex or intricateGRE coordinateAn ordered set of numbers that specifies the position of a point in a given refe…GRE · SAT copiousabundant; existing or available in large quantitiesGRE · SAT coplanarLying in the same geometric plane; used to describe points, lines, or figures th…GRE corollaryA proposition that follows naturally from one already proven, requiring little o…GRE correspondingIn geometry, occupying the same relative position in similar or congruent figure…GRE · SAT corroborateTo confirm or give support to a statement, theory, or finding with additional ev…GRE · SAT cosineA trigonometric function of an angle equal to the ratio of the length of the adj…GRE covetTo yearn to possess or have something that belongs to another, especially enviou…GRE cravenlacking even the rudiments of courageGRE credenceBelief in or acceptance of something as true, especially without conclusive proo…GRE credoA statement of the beliefs or aims that guide someone's actions; a creed.GRE credulousHaving too great a readiness to believe things; gullible.GRE · SAT crescendoA gradual increase in intensity, volume, or force, reaching a peak.GRE cumbersomeDifficult to manage or handle because of weight, size, or complexity; unwieldy.GRE cupidityExcessive greed, especially for money or possessions.GRE cursoryHasty and therefore not thorough or detailed; superficial.GRE cylinderA three-dimensional solid with two parallel, congruent circular bases connected …GRE

D

dearthA scarcity or lack of something.GRE debacleA sudden and complete disaster or humiliating failure.GRE decagonA polygon with ten sides and ten angles; a regular decagon has all sides and ang…GRE decimalA number expressed in the base-10 system using a decimal point to represent frac…GRE decorumbehavior that is in accordance with accepted standards; proprietyGRE · SAT decreaseA reduction in size, quantity, or degree; the result of subtracting a larger val…GRE deferencehumble submission and respect shown toward an authority or elderGRE · SAT deignTo condescend reluctantly and with a strong sense of the favor being conferred.GRE deleteriousCausing harm or damage, especially in a subtle or unexpected way.GRE · SAT delineatedescribed or portrayed precisely and in detailGRE · TOEFL delineatedDescribed or portrayed precisely; having boundaries or features clearly defined.GRE delugea great flood of water; an overwhelming rush or abundanceGRE · SAT demagogueA political leader who seeks support by appealing to popular prejudices rather t…GRE demurto raise objections; to show reluctance or hesitationGRE · SAT denigratecharge falsely or with malicious intentGRE denizenAn inhabitant or occupant of a particular place.GRE denominatorThe number below the line in a fraction, indicating how many equal parts the who…GRE denouementThe final resolution or outcome of a complex sequence of events, especially in a…GRE depleteTo use up or exhaust the supply or resources of something.GRE · SAT depravitymoral corruption or wickedness; extreme immoralityGRE · SAT deprecateto express disapproval of something; to belittle or disparageGRE · SAT deprecationThe act of expressing disapproval or belittlement.GRE depreciateTo diminish in value over time, or to disparage or belittle.GRE derideto express contempt for someone or something; to mock or ridiculeGRE · SAT derivativea compound obtained from another compoundGRE desiccatelacking vitality or spirit; lifelessGRE destituteLacking the basic necessities of life; extremely poor.GRE desultoryLacking a plan, purpose, or enthusiasm; occurring randomly or sporadically.GRE detachedbeing or feeling set or kept apart from othersGRE determinantA scalar value computed from the elements of a square matrix that encodes certai…GRE deterrentsomething immaterial that interferes with actionGRE diagonalA line segment connecting two non-adjacent vertices of a polygon, or extending f…GRE diameterA straight line passing through the center of a circle or sphere, connecting two…GRE diatribethunderous verbal attackGRE dichotomya division or contrast between two things that are opposedGRE · SAT didacticintended to teach, particularly in a pedantic or moralistic wayGRE · SAT differenceThe result obtained by subtracting one number from another.GRE · TOEFL diffidencelack of self-confidenceGRE diffusemove outwardGRE digitAny of the numerals from 0 to 9, especially when forming part of a larger number…GRE digressionA temporary departure from the main subject in speech or writing.GRE diminutiveExtremely or unusually small.GRE directionThe orientation or path along which something moves or faces, often expressed as…GRE dirgea song or hymn of mourning as a memorial to a dead personGRE · SAT disabusefree somebody from an erroneous beliefGRE disaffectedDissatisfied with those in authority and no longer willing to support them.GRE discerninghaving or revealing keen insight and good judgmentGRE discordantnot in agreement or harmonyGRE discreditcause to be distrusted or disbelievedGRE discrepancyA lack of compatibility or similarity between two or more facts or claims.GRE · IELTS discreteconstituting a separate entity or partGRE discretionThe quality of behaving or speaking in a way that avoids causing offense or reve…GRE disdainlack of respect accompanied by a feeling of intense dislikeGRE disingenuousNot candid or sincere, typically by pretending to know less or be less involved …GRE dismissTo reject as unworthy of consideration; to treat as insignificant.GRE disparageTo regard or represent as being of little worth; to belittle.GRE disparateEssentially different in kind; not allowing comparison.GRE dissembleTo conceal one's true motives, feelings, or beliefs behind a false appearance.GRE disseminatecause to become widely knownGRE dissidentA person who opposes official policy, especially that of an authoritarian state.GRE dissolutionseparation into component partsGRE dissonancedisagreeable soundsGRE distanceThe length of the shortest path between two points, often calculated using the d…GRE distendcause to expand as if by internal pressureGRE distillundergo condensationGRE divergemove or draw apartGRE divergenceThe process or state of moving apart or becoming different; in mathematics, a me…GRE dividendThe number being divided in a division operation.GRE divisionThe mathematical operation of dividing one number by another to find how many ti…GRE divulgeTo make known private or sensitive information.GRE docileeasily handled or managedGRE documenta representation of a person's thinking with contentGRE · TOEFL doggerelVerse or poetry that is badly written or trivial in nature.GRE dogmaticpertaining to a code of beliefs accepted as authoritativeGRE draconianExcessively harsh and severe, especially of laws or punishments.GRE dupea person who is tricked or swindledGRE

E

ebullientjoyously unrestrainedGRE echelonA level or rank in an organization, profession, or society.GRE eclecticselecting what seems best of various styles or ideasGRE ecumenicalRepresenting or promoting unity among the world's Christian churches, or more br…GRE edifyingProviding moral or intellectual instruction; enlightening.GRE effacingMaking oneself appear insignificant or inconspicuous; self-effacing.GRE effervescentVivacious and enthusiastic; also, giving off bubbles.GRE effeteAffected, overrefined, and ineffectual; no longer capable of effective action.GRE efficaciousSuccessful in producing a desired or intended result; effective.GRE efficacyThe ability to produce a desired or intended result.GRE effronteryaudacious, even combative, behaviorGRE egoismAn ethical theory that treats self-interest as the foundation of morality, or ex…GRE egotisticalExcessively conceited or absorbed in oneself.GRE egregiousOutstandingly bad; shockingly flagrant.GRE eigenvalueA scalar associated with a linear transformation of a vector space, representing…GRE elegya mournful poem, especially one lamenting the deadGRE ellipseA closed plane curve that is the set of all points such that the sum of the dist…GRE eloquentexpressing yourself readily, clearly, effectivelyGRE elucidateTo make something clear; to explain or clarify.GRE eludeTo evade or escape from, typically in a skillful or cunning way; to fail to be u…GRE elusiveskillfully evasiveGRE elysianRelating to or characteristic of heaven or paradise; blissful.GRE emaciatedvery thin especially from disease or hunger or coldGRE embellishmake more attractive, as by adding ornament or colorGRE empiricalBased on observation or experience rather than theory or pure logic.GRE · TOEFL · IELTS empiricismThe philosophical theory that all knowledge is derived from sensory experience.GRE emulatestrive to equal or match, especially by imitatingGRE encomiumA speech or piece of writing that praises someone or something highly.GRE encumberTo impede or burden; to restrict or weigh down.GRE endemicnative to or confined to a certain regionGRE enervateweaken mentally or morallyGRE engenderto cause or give rise to a feeling, situation, or conditionGRE · SAT enhanceTo intensify, increase, or further improve the quality, value, or extent of some…GRE · SAT · TOEFL · IELTS ennuithe feeling of being bored by something tediousGRE entreatTo ask someone earnestly or anxiously to do something.GRE enunciateTo pronounce words clearly, or to express an idea or theory precisely.GRE ephemeralanything short-lived, as an insect that lives only for a dayGRE · SAT equableNot easily disturbed or angered; calm and even-tempered.GRE equalHaving the same quantity, value, or measure as another; identical in mathematica…GRE · TOEFL · IELTS equanimitysteadiness of mind under stressGRE equationA mathematical statement asserting the equality of two expressions, connected by…GRE equilateralHaving all sides of equal length.GRE equivalentEqual in value, function, or meaning; having the same mathematical value express…GRE · TOEFL equivocateto use ambiguous language to conceal the truth; to hedgeGRE · SAT eruditehaving or showing profound knowledgeGRE esotericintended for or understood by only a small number of peopleGRE · SAT ethosThe characteristic spirit, attitudes, and beliefs of a community, era, or moveme…GRE etymologyThe study of the origin and historical development of words.GRE · SAT euclideanRelating to the geometry of flat, two-dimensional planes and three-dimensional s…GRE eugenicsThe study or practice of attempting to improve the genetic composition of a popu…GRE eulogya formal expression of praise for someone who has diedGRE · SAT euphemisma mild or indirect word used in place of one that might seem harshGRE · SAT evanescenttending to vanish like vaporGRE exacerbateto make a problem, bad situation, or negative feeling worseGRE · SAT excoriateTo criticize someone severely; to censure harshly.GRE exculpateto show someone is not guilty; to clear from blameGRE · SAT exhortTo strongly encourage or urge someone to do something.GRE exigencyAn urgent need or demand; a pressing requirement.GRE exigentdemanding immediate attentionGRE existentialRelating to human existence, or to the philosophical movement of existentialism …GRE exoneratepronounce not guilty of criminal chargesGRE exorcizeTo drive out an evil spirit or to free someone or something from a persistent ne…GRE expedientConvenient and practical, though possibly improper or immoral; serving one's imm…GRE · SAT exponentA quantity representing the power to which a given number or expression is to be…GRE expostulateTo express strong disagreement or disapproval; to reason earnestly with someone …GRE expressionA mathematical phrase combining numbers, variables, and operation symbols that r…GRE expurgateTo remove matter thought to be objectionable or unsuitable from a text or accoun…GRE extemporaneousSpoken or done without preparation; impromptu.GRE extirpateTo root out and destroy completely.GRE extolto praise enthusiastically and publicly; to exaltGRE · SAT extraneousirrelevant or unrelated to the subject being dealt with; superfluousGRE · SAT extrapolateTo extend the application of a known dataset or method to an unknown situation b…GRE · SAT extrapolationan inference about the future based on known factsGRE extricateTo free someone or something from a constraint or difficult situation.GRE

F

facetOne side or aspect of something, especially one of several.GRE facetiousTreating serious issues with deliberately inappropriate humor; flippant.GRE facilitateTo make an action or process easier; to enable.GRE · TOEFL · IELTS factorA number or algebraic expression that divides another number or expression evenl…GRE · TOEFL · IELTS factorialThe product of all positive integers less than or equal to a given positive inte…GRE factorizationThe process of decomposing a number or expression into a product of simpler fact…GRE faitAn accomplished fact; something that has already occurred and is thus unlikely t…GRE fallaciousbased on a mistaken belief; containing a fallacyGRE · SAT fallacyA mistaken belief or a flawed argument based on unsound reasoning.GRE · SAT fallibleCapable of making mistakes or being erroneous.GRE fastidiousVery attentive to and concerned about accuracy and detail; excessively particula…GRE · SAT fatuoussilly and pointless; complacently foolishGRE · SAT faunaThe animals of a particular region, habitat, or geological period.GRE · IELTS feignTo pretend to be affected by something; to simulate or fabricate.GRE ferventHaving or displaying a passionate intensity of feeling.GRE fetidSmelling extremely bad; stinking.GRE fetterTo restrain or confine; a chain or shackle placed on the feet.GRE fiatA formal authorization or decree; an arbitrary order.GRE fibonacciRelating to the Fibonacci sequence, in which each number is the sum of the two p…GRE fidelityFaithfulness to a person, cause, or belief, demonstrated by continuing loyalty a…GRE filigreeOrnamental work of fine wire, or any delicate and intricate ornamentation.GRE finiteHaving a definite limit or fixed size; not infinite.GRE · TOEFL firebrandA person who is passionate about a particular cause, often inciting change or un…GRE flippantNot showing a serious or respectful attitude.GRE floraThe plants of a particular region, habitat, or geological period.GRE · IELTS flourishTo grow or develop in a healthy or vigorous way, especially as the result of a f…GRE flouttreat with contemptuous disregardGRE fomenttry to stir upGRE forestallkeep from happening or arising; make impossibleGRE formidableInspiring fear or respect through being impressively large, powerful, or capable…GRE formulaA mathematical rule or relationship expressed in symbols, numbers, and variables…GRE founderTo fail or collapse completely; to fill with water and sink (of a ship).GRE fourierRelating to Fourier analysis, a mathematical method that decomposes functions in…GRE fracasA noisy disturbance or quarrel.GRE fractalA geometric shape that displays self-similarity at every scale, where each part …GRE fractionA numerical quantity that is not a whole number, expressed as one integer (numer…GRE fractiousEasily irritated; unruly and difficult to control.GRE frivolousNot having any serious purpose or value; carefree and not serious.GRE frugalSparing or economical with money or food; simple and plain.GRE · IELTS fulminateTo express vehement protest or criticism.GRE fulsomeExcessively flattering or insincerely lavish in praise; offensively overdone.GRE functionA mathematical relation that assigns exactly one output to each input from a giv…GRE · TOEFL · IELTS furtiveAttempting to avoid notice or attention, typically because of guilt or a belief …GRE futileIncapable of producing any useful result; pointless.GRE

G

gainsaytake exception toGRE gallonA unit of liquid capacity equal to 128 U.S. fluid ounces (approximately 3.785 li…GRE galvanizeTo shock or excite someone into taking action.GRE garrulousfull of trivial conversationGRE gaussianRelating to the Gaussian (normal) distribution, a bell-shaped probability curve …GRE genialityThe quality of having a friendly and cheerful manner.GRE genreA category of artistic composition characterized by similarities in form, style,…GRE · TOEFL genteelPolite, refined, or respectable, often in an affected or ostentatious way.GRE gentilitySocial superiority as demonstrated by polite and respectable manners, behavior, …GRE geometricRelating to geometry, or characterized by a constant ratio between successive te…GRE germaneRelevant and appropriate to the matter at hand.GRE glibFluent and voluble but insincere and shallow.GRE goadstab or urge on as if with a pointed stickGRE gougean impression in a surface, as made by a blowGRE gradientThe rate of change of a quantity with respect to distance; in calculus, a vector…GRE grandiloquentlofty in styleGRE graphA visual representation of data or mathematical relationships, typically using a…GRE gravityExtreme importance or seriousness; also, the force that attracts a body toward a…GRE · TOEFL gregarioustemperamentally seeking and enjoying the company of othersGRE · SAT guileSly or cunning intelligence used to deceive.GRE guilelessfree of deceitGRE guiseAn external form or appearance, especially one that conceals the true nature of …GRE

H

hackneyedLacking significance through having been overused; unoriginal.GRE hamiltonianIn mathematics and physics, a function describing the total energy of a system; …GRE haranguea lengthy and aggressive speech; to lecture someone at length in angerGRE · SAT harbingerA person or thing that announces or signals the approach of another.GRE hedonismThe pursuit of pleasure as the highest good and the primary motivation for human…GRE · SAT hedonista person who believes that pleasure is the chief goodGRE · SAT hegemonythe dominance or leadership of one social group over othersGRE heightThe vertical measurement of something from base to top; in geometry, the perpend…GRE heptagonA polygon with seven sides and seven angles.GRE heresybelief or opinion contrary to orthodox doctrine; heterodoxyGRE · SAT hereticalHolding an opinion at odds with what is generally accepted, especially in religi…GRE hermeticcompletely sealed or airtightGRE heuristicA practical problem-solving approach that employs a strategy not guaranteed to b…GRE hexagonA polygon with six sides and six angles.GRE hieroglyphicRelating to a system of writing using pictorial symbols, especially as used in a…GRE histrionicDeliberately affected or excessively dramatic in behavior or speech.GRE · SAT homogeneousComposed of parts or elements that are all of the same kind; uniform in structur…GRE horizontalA line or plane parallel to the x-axis or the plane of the horizon, having zero …GRE hubrisExcessive pride or arrogance, especially that which invites downfall or retribut…GRE hyperbolaA conic section formed by the intersection of a cone with a plane at an angle st…GRE hypotenuseThe side of a right triangle opposite the right angle, and the longest side of t…GRE hypothesisA supposition or proposed explanation made on the basis of limited evidence, ser…GRE · TOEFL · IELTS

I

iconoclastA person who attacks or criticizes cherished beliefs, institutions, or establish…GRE · SAT iconoclasticcharacterized by attack on established beliefsGRE icosahedronA polyhedron with twenty faces, especially a regular icosahedron whose faces are…GRE identicalIn mathematics, being exactly equal in value, form, or properties such that one …GRE · IELTS ideologicalRelating to or based on a system of ideas and ideals, especially concerning poli…GRE idolatrythe worship of combatable thingsGRE ignominyPublic shame or disgrace; deep personal humiliation and dishonor.GRE · SAT imbroglioAn extremely confused, complicated, or embarrassing situation, especially one in…GRE imbueTo permeate or inspire with a feeling, quality, or idea.GRE imminentAbout to happen; impending and likely to occur very soon.GRE immutableunchanging over time; unable to be changed or alteredGRE · SAT impairmake worse or less effectiveGRE impartialtreating all rivals or disputants equally; unbiased and fairGRE · SAT · TOEFL impedebe a hindrance or obstacle toGRE impedimentA hindrance or obstruction that delays or prevents progress.GRE imperiousAssuming power or authority without justification; domineering and overbearing.GRE imperturbableUnable to be upset or excited; remaining calm under all circumstances.GRE imperviousnot admitting of passage or capable of being affectedGRE impetuousActing or done quickly and without thought or care; impulsive and rash.GRE implacableincapable of being appeased or pacifiedGRE implicationA conclusion that can be drawn from something although not explicitly stated; an…GRE · TOEFL · IELTS implicitNot stated directly but understood from contextGRE · TOEFL imprecationA spoken curse; an invocation of evil or misfortune upon someone.GRE imprimaturAn official approval or sanction, especially of a publication; an authoritative …GRE improvidentNot having or showing foresight; failing to provide for future needs; spendthrif…GRE impudentimproperly forward or boldGRE impugnTo call into question the integrity or validity of; to challenge or dispute as f…GRE imputeTo attribute or ascribe a characteristic, action, or motive to someone, often wi…GRE inaneLacking sense or meaning; silly and pointless.GRE incessantuninterrupted in time and indefinitely long continuingGRE · SAT inchoateonly partly in existence; imperfectly formedGRE incongruitythe quality of disagreeingGRE inconsequentialnot important or significant; trivialGRE · SAT incontrovertibleNot able to be denied or disputed; unquestionable and beyond argument.GRE incorporatemake into a whole or make part of a wholeGRE · TOEFL increaseA quantitative change in which a value becomes larger; the amount by which a qua…GRE · IELTS inculcateTo instill an attitude, idea, or habit by persistent instruction or repetition.GRE incursionAn invasion or attack, especially a sudden or brief one into foreign territory.GRE indefatigablePersisting tirelessly; showing sustained effort and determination without yieldi…GRE indeterminatenot precisely determined or establishedGRE indifferentHaving no particular interest or sympathy; unconcerned or apathetic.GRE · SAT indigencea state of extreme poverty or destitutionGRE indignantFeeling or showing anger or annoyance at what is perceived as unfair treatment.GRE indolentdisinclined to work or exertionGRE ineffableToo great or extreme to be expressed or described in words; indescribable.GRE · SAT inequalityA mathematical statement that compares two expressions using symbols such as <, …GRE · IELTS inertunable to move or resist motionGRE inexorableImpossible to stop or prevent; unyielding and relentless in progression.GRE infallibleIncapable of making mistakes or being wrong; consistently reliable and accurate.GRE infamyThe state of being well known for some bad quality or deed; notoriety for wicked…GRE inflectionA point on a curve at which the curvature changes sign, transitioning from conca…GRE ingeniousCleverly inventive or resourceful; showing remarkable originality and skill.GRE ingenuouslacking in sophistication or worldlinessGRE inherentExisting in something as a permanent, essential, or characteristic attribute.GRE · TOEFL · IELTS innocuousnot injurious to physical or mental healthGRE innuendoAn allusive or oblique remark or hint, typically a suggestive or disparaging one…GRE inscrutableof an obscure natureGRE insensiblebarely able to be perceivedGRE insinuatesuggest in an indirect or covert wayGRE insipidlacking interest or significance or impactGRE insoucianceCasual lack of concern; a carefree indifference to serious matters.GRE insularitythe state of being combated or isolatedGRE integerA whole number that can be positive, negative, or zero, belonging to the set {..…GRE integralIn calculus, the integral of a function represents the accumulated area under it…GRE interceptThe point at which a line or curve crosses a coordinate axis; the x-intercept is…GRE interdictTo prohibit or forbid authoritatively; to intercept and prevent the movement of …GRE interloperA person who becomes involved in a place or situation where they are not wanted …GRE interpolateTo insert something between existing elements; to estimate an unknown value that…GRE intersectTo cross or meet at a point; in geometry, two lines intersect when they share ex…GRE intersectionIn set theory, the intersection of two sets is the set of elements common to bot…GRE intervalA set of all real numbers between two given endpoints, which may be open (exclud…GRE intimateTo suggest or hint at something subtly and indirectly; to imply without explicit…GRE intransigentUnwilling or refusing to change one's views or to agree about something; stubbor…GRE intrepidFearless and adventurous; showing resolute courage in the face of danger.GRE intricateVery complicated or detailed; having many complexly arranged elements.GRE introspectionThe examination or observation of one's own mental and emotional processes.GRE invectiveInsulting, abusive, or highly critical language directed against someone.GRE inveighTo speak or write about something with great hostility; to protest or rail vehem…GRE inveigleTo persuade someone to do something by means of deception or flattery; to entice…GRE inverseA mathematical relationship in which one quantity increases as another decreases…GRE invokeTo cite or appeal to someone or something as an authority for an action or in su…GRE irrationalA real number that cannot be expressed as a ratio of two integers; its decimal e…GRE irresoluteuncertain how to act or proceedGRE isoscelesDescribing a triangle that has exactly two sides of equal length, with the angle…GRE iterationThe repetition of a mathematical or computational process, applying it to the re…GRE itineranttraveling from place to place to workGRE

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jacobianA matrix of all first-order partial derivatives of a vector-valued function, use…GRE jibeTo be in accord or agreement; to be consistent with something.GRE juntaA military or political group that rules a country after seizing power by force.GRE jurisprudenceThe theory or philosophy of law; the study and interpretation of legal principle…GRE juxtaposeTo place close together or side by side for comparison or contrast.GRE

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kenThe range of what one can know or understand; one's scope of knowledge or percep…GRE kismetDestiny or fate, especially as determined by a higher power or cosmic force.GRE

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lachrymoseTearful or given to weeping; inducing tears through excessive sentimentality.GRE · SAT lacklusterLacking in vitality, force, or conviction; dull and uninspired.GRE · SAT laconicusing very few words; brief and terse in speech or expressionGRE · SAT lacunaAn unfilled space or gap, especially in a manuscript, text, or body of knowledge…GRE lagrangeReferring to methods or theorems associated with Joseph-Louis Lagrange, includin…GRE lambasteTo criticize harshly and severely; to reprimand or berate with great force.GRE languiddisplaying a disinclination for physical exertion; listlessGRE · SAT laplacianA second-order differential operator equal to the divergence of the gradient of …GRE lasciviousFeeling or revealing an overt and often offensive sexual desire; lustful and lew…GRE lassitudea feeling of lack of interest or energyGRE latentpotentially existing but not presently evident or realizedGRE laudto praise highly; to extolGRE · SAT laudableDeserving praise and commendation; worthy of admiration.GRE lebesgueRelating to Henri Lebesgue's theory of measure and integration, which generalize…GRE legerdemainSkillful use of one's hands when performing tricks; deception or trickery.GRE lengthThe measurement of the extent of something along its greatest dimension; in geom…GRE · TOEFL lethargicaffected by lethargy; sluggish and apatheticGRE · SAT leveean embankment built to prevent a river from overflowingGRE levitythe treatment of a serious matter with humor; lightnessGRE · SAT lexiconThe vocabulary of a person, language, or branch of knowledge; a dictionary or wo…GRE liberalshowing or characterized by broad-mindednessGRE limpidclear and brightGRE lineageDirect descent from an ancestor; ancestry or pedigree.GRE linearRelating to or resembling a straight line; in mathematics, describing a function…GRE litanyA tedious recital or repetitive series; a long and monotonous list of complaints…GRE lithethin, supple, and graceful in movement; flexibleGRE · SAT loga segment of the trunk of a tree when stripped of branchesGRE logarithmThe exponent to which a base must be raised to produce a given number; if b^x = …GRE loquacioustending to talk a great deal; garrulous and wordyGRE · SAT lucidclear and easy to understand; thinking clearlyGRE · SAT lucreMoney or profit, especially when regarded as sordid or obtained dishonorably.GRE luminoussoftly bright or radiantGRE lustrousHaving a gentle sheen or soft glow; shining with reflected light.GRE

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machinationA crafty scheme or plot intended to accomplish some usually evil end; an underha…GRE maelstromA powerful whirlpool; a situation or state of confused and turbulent movement or…GRE · SAT magnanimityliberality in bestowing giftsGRE magnanimousVery generous or forgiving, especially toward a rival or someone less powerful.GRE · SAT magnateA wealthy and influential person, especially in business or industry.GRE · SAT magniloquentUsing high-flown or bombastic language; speaking in a lofty or grandiose style.GRE magnitudeThe size, extent, or absolute value of a quantity; in mathematics, the length of…GRE · IELTS malapropismThe mistaken use of a word in place of a similar-sounding one, often with humoro…GRE malfeasanceWrongdoing or misconduct, especially by a public official; illegal or unethical …GRE malingerto pretend to be ill to avoid duty or workGRE · SAT malleableable to be shaped; easily influenced; adaptableGRE · SAT manifoldIn mathematics, a topological space that locally resembles Euclidean space near …GRE markovRelating to stochastic processes in which the probability of each event depends …GRE martinetA strict disciplinarian, especially in the military; someone who demands absolut…GRE · SAT massA measure of the amount of matter in an object, typically measured in kilograms …GRE · TOEFL matrixA rectangular array of numbers, symbols, or expressions arranged in rows and col…GRE mavericksomeone who exhibits independence in thought and actionGRE measurementThe process of assigning a numerical value to a physical quantity by comparing i…GRE medianThe middle value in an ordered data set; if the set has an even number of values…GRE mediocreOf only moderate quality; neither good nor bad; lacking distinction or excellenc…GRE mendaciousintentionally untrueGRE mendicantA person who lives by begging; relating to or characteristic of a beggar.GRE mercenaryPrimarily concerned with making money at the expense of ethics; a person hired t…GRE meretriciousApparently attractive but having in reality no value or integrity; superficially…GRE meritoriousDeserving reward, praise, or recognition for excellence or worthiness.GRE metamorphoseTo change completely in form, nature, or character; to undergo a profound transf…GRE metamorphosisa complete change of physical form or substanceGRE meterThe base unit of length in the International System of Units (SI), defined as th…GRE meticulousmarked by precise accordance with detailsGRE meticulousnessThe quality of showing great attention to detail; extreme carefulness and precis…GRE metricA function that defines a distance between elements of a set, satisfying conditi…GRE mettleA person's ability to cope well with difficulties or to face a demanding situati…GRE midpointThe point on a line segment that is equidistant from both endpoints, calculated …GRE misanthropesomeone who dislikes people in generalGRE miscreantA person who behaves badly or in a way that breaks the law; a wrongdoer or villa…GRE mitigateTo make less severe, serious, or painful; to lessen the impact of.GRE · IELTS mnemonicA device such as a pattern of letters, ideas, or associations that assists in re…GRE modeThe value that appears most frequently in a data set; a data set may have one mo…GRE modicumA small quantity of a particular thing, especially something considered desirabl…GRE mollifycause to be more favorably inclinedGRE moroseshowing a brooding ill humorGRE multifariousMany and of various types; exhibiting great diversity and variety.GRE multipleA number that can be divided by another number without a remainder; the product …GRE multiplicationA fundamental arithmetic operation that combines two numbers (factors) to produc…GRE munificentExtremely generous; characterized by great liberality in giving.GRE museTo think about something carefully and at length; to be absorbed in thought or r…GRE myopicLacking imagination, foresight, or intellectual insight; narrowly focused on imm…GRE myriada large indefinite numberGRE

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nascentJust beginning to develop; emerging and not yet fully formed.GRE nattySmart and fashionable in dress or appearance; neatly and stylishly dressed.GRE necromancyThe supposed practice of communicating with the dead to predict the future; sorc…GRE negateto nullify or make ineffective; to deny or contradictGRE · SAT negativeA number less than zero, represented with a minus sign; on a number line, negati…GRE · IELTS neophyteany new participant in some activityGRE nettleTo irritate or annoy someone; to provoke with petty vexations.GRE nihilismThe rejection of all religious and moral principles, often based on the belief t…GRE nonchalanceThe quality of appearing casually calm and relaxed; a lack of concern or enthusi…GRE nonplussedSo surprised and confused that one is unsure how to react; bewildered and at a l…GRE nostalgiaA sentimental longing or wistful affection for a period in the past.GRE nostrumA medicine of unproven effectiveness; a pet scheme or favorite remedy, especiall…GRE notationA system of symbols or signs used to represent numbers, quantities, or operation…GRE notoriousFamous or well known, typically for some bad quality or deed; widely and unfavor…GRE nullifyTo make legally null and void; to invalidate or render ineffective.GRE · SAT numeralA figure, symbol, or group of figures or symbols denoting a number in a given nu…GRE numeratorThe number above the line in a fraction, representing how many parts of the whol…GRE

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obduratestubbornly refusing to change one's opinion; hardened against persuasionGRE · SAT obfuscateTo render obscure, unclear, or unintelligible; to deliberately make something co…GRE · SAT obliqueNot explicit or direct in stating or expressing something; slanting or angled ra…GRE · SAT oblivionThe state of being unaware or unconscious of what is happening; the state of bei…GRE obliviousNot aware of or not concerned about what is happening around one; utterly unmind…GRE · SAT obsequiousexcessively obedient and eager to please; servileGRE · SAT obstreperousNoisy and difficult to control; stubbornly defiant and unruly.GRE · SAT obtuseIn geometry, an angle measuring greater than 90 degrees but less than 180 degree…GRE · SAT obviateto avoid or prevent; to make unnecessaryGRE · SAT occludeblock passage throughGRE octagonA polygon with eight sides and eight angles; a regular octagon has all sides and…GRE oeuvreThe complete body of work produced by a writer, artist, or composer over their c…GRE officiousAsserting authority or interfering in a domineering way, especially in trivial m…GRE · SAT offseta compensating equivalentGRE onerousinvolving a great deal of effort and difficulty; oppressively burdensomeGRE · SAT onomatopoeiaThe formation of a word that phonetically imitates or suggests the sound it desc…GRE opaquenot able to be seen through; not clearly understood or explainedGRE · SAT operationA mathematical process such as addition, subtraction, multiplication, or divisio…GRE opportunista person who places expediency above principleGRE opprobriousExpressing scorn, harsh criticism, or abusive disapproval.GRE opprobriuma state of extreme dishonorGRE opulenceGreat wealth or luxuriousness; lavish abundance.GRE ordinalA number that indicates position or order in a sequence, such as first, second, …GRE originThe fixed point (0, 0) in a coordinate system where the x-axis and y-axis inters…GRE · IELTS ornateElaborately or excessively decorated; marked by intricate detail.GRE · SAT orthodoxAdhering to established, traditional, or widely accepted beliefs or practices.GRE · SAT orthogonalRelating to or involving right angles; perpendicular, especially in reference to…GRE oscillatemove or swing from side to side regularlyGRE ostensibleAppearing to be true or real but not necessarily so; stated or seeming as oppose…GRE ostentatiousintended to attract notice and impress othersGRE · SAT

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pacifyTo bring to a state of peace or calm; to appease or soothe.GRE painstakingDone with or employing great care, thoroughness, and attention to detail.GRE palliateTo make a disease or its symptoms less severe without curing it; to alleviate wi…GRE palpableSo intense as to be almost able to be touched or felt; easily perceived or obvio…GRE · SAT panegyricA formal public speech or written composition that lavishly praises someone or s…GRE parabolaA symmetrical open plane curve formed by the intersection of a cone with a plane…GRE paradigmA typical example, model, or pattern of something; a framework of concepts and a…GRE · SAT paradoxa statement that seems self-contradictory but may be true; a dilemmaGRE · SAT paragona person or thing regarded as a perfect example of a qualityGRE · SAT parallelogramA four-sided plane figure (quadrilateral) whose opposite sides are parallel and …GRE parametricRelating to or expressed in terms of a parameter, a variable that defines a syst…GRE parsimoniousExcessively unwilling to spend money or use resources; extremely frugal or sting…GRE · SAT partisana fervent and even militant proponent of somethingGRE parvenuA person who has suddenly acquired wealth or prominence but lacks the social gra…GRE pathosA quality that evokes feelings of pity, sympathy, or sorrow in the audience.GRE patinaA surface coating or appearance that develops on something over time, often sugg…GRE patoisA regional dialect or nonstandard form of a language, especially one with low so…GRE patronA person who gives financial or other support to a person, organization, or caus…GRE pecuniaryRelating to or consisting of money; financial.GRE pedanticExcessively concerned with minor details or rules, especially in teaching or aca…GRE pejorativeExpressing contempt or disapproval; having a disparaging or derogatory connotati…GRE penchantA strong habitual liking or inclination for something.GRE penitentFeeling or showing sorrow and regret for having done wrong; repentant.GRE pentagonA plane figure with five straight sides and five angles; a regular pentagon has …GRE penuriousExtremely poor or unwilling to spend money; characterized by poverty or extreme …GRE percentA ratio or fraction expressed as a portion of 100, denoted by the symbol %.GRE peregrinationA long journey, especially one undertaken on foot or through foreign lands.GRE perfidiousDeceitful and untrustworthy; deliberately faithless or treacherous.GRE perfunctoryCarried out with minimal effort or care, merely as a routine duty.GRE perimeterThe total length of the boundary of a two-dimensional shape.GRE peripheralRelating to or situated on the edge or outskirts; of secondary or minor importan…GRE permutationAn arrangement of a set of items in a specific order, where the sequence matters…GRE perniciousHaving a harmful effect, especially in a gradual or subtle way.GRE perpendicularAt an angle of 90 degrees to a given line, plane, or surface; intersecting at ri…GRE perquisiteA special benefit or privilege enjoyed in addition to regular income or compensa…GRE perturbedFeeling anxious, uneasy, or unsettled; disturbed.GRE philanthropyThe desire to promote the welfare of others; charitable giving.GRE · IELTS phlegmaticshowing little emotionGRE physiognomyA person's facial features or expression, especially as regarded as indicative o…GRE piquantHaving a pleasantly sharp, stimulating taste or quality; engagingly provocative.GRE placatecause to be more favorably inclinedGRE placidCalm, peaceful, and free from disturbance; not easily upset or excited.GRE · SAT planeA flat, two-dimensional surface that extends infinitely in all directions, defin…GRE plasticcapable of being molded or modeledGRE platitudeA remark or statement that has been used too often to be interesting or thoughtf…GRE plethoraan excess or abundance of somethingGRE · SAT plumbTo examine or explore thoroughly in order to understand something deeply.GRE poissonA discrete probability distribution that expresses the probability of a given nu…GRE polemicalInvolving or characterized by aggressive, controversial argument or critical att…GRE · SAT polygonA closed plane figure bounded by three or more straight line segments.GRE polyhedronA three-dimensional solid figure with flat polygonal faces, straight edges, and …GRE polynomialAn algebraic expression consisting of variables and coefficients combined using …GRE ponderousSlow and clumsy because of great weight; dull, laborious, or excessively solemn.GRE · SAT pontificateTo express opinions or judgments in a pompous, dogmatic, and self-important mann…GRE · SAT positiveA number greater than zero; in mathematics, belonging to the set of values on th…GRE · IELTS postulateTo assume or claim as true, especially as a basis for reasoning or discussion; a…GRE · SAT pragmaticdealing with things sensibly and realistically; practicalGRE · SAT prattleTo talk at length in a foolish, inconsequential, or childish way.GRE preceptA general rule intended to regulate behavior or thought; a guiding principle.GRE · SAT precipitateTo cause an event or situation to happen suddenly, unexpectedly, or prematurely.GRE precipitousDangerously steep; done suddenly and without careful consideration.GRE · SAT precociousHaving developed certain abilities or inclinations at an earlier age than is usu…GRE · SAT predilectionA preference or special liking for something; a bias in favor of something.GRE predisposedMade susceptible or inclined to something in advance; having a tendency toward.GRE prerogativeAn exclusive right or privilege belonging to a particular person or group.GRE · SAT presageTo be a sign or warning that something, typically bad, will happen; to foretell …GRE prestigeWidespread respect and admiration resulting from achievement, quality, or social…GRE prevaricateTo speak or act in an evasive, misleading way; to avoid giving a direct or truth…GRE · SAT primeA natural number greater than 1 that has no positive divisors other than 1 and i…GRE prismA three-dimensional solid with two congruent, parallel polygonal bases and recta…GRE probabilityA measure of the likelihood that an event will occur, expressed as a number betw…GRE probityThe quality of having strong moral principles; complete honesty and uprightness.GRE proclivityA tendency or inclination to do something, especially something objectionable.GRE · SAT prodigalSpending money or resources freely and recklessly; wastefully extravagant.GRE · SAT prodigiousRemarkably great in extent, size, or degree; impressively large or powerful.GRE · SAT productThe result obtained by multiplying two or more numbers or expressions together.GRE profligateRecklessly extravagant or wasteful in the use of resources; shamelessly immoral.GRE profoundvery great or intense; showing deep understanding; far-reachingGRE · SAT · IELTS prohibitiveSo high or burdensome as to prevent or discourage purchase, use, or action.GRE proliferateTo increase rapidly in number; to multiply or spread at a fast rate.GRE prolixityThe use of an excessive number of words; tedious long-windedness in speech or wr…GRE promulgateTo make widely known; to put a law or decree into effect by official proclamatio…GRE propensityAn innate inclination or tendency to behave in a particular way.GRE propertyA characteristic or attribute of a mathematical object, such as the commutative,…GRE proponentA person who advocates for or supports a theory, proposal, or course of action.GRE proportionAn equation stating that two ratios are equal; a relationship between quantities…GRE · TOEFL · IELTS proprietaryRelating to ownership; held or restricted as the property of an individual or or…GRE proprietyConformity to conventionally accepted standards of behavior or morals; the state…GRE prosaicLacking poetic beauty or imagination; dull, mundane, and commonplace.GRE protractedLasting for a long time or longer than expected; prolonged.GRE providentMaking provision for future needs; prudent and thrifty.GRE provincialNarrow in scope or outlook; unsophisticated, especially in cultural matters.GRE prudenceThe quality of acting with care and thought for the future; cautious practical w…GRE prudentActing with or showing care and thought for the future; exercising good judgment…GRE pugnaciousEager or quick to argue, quarrel, or fight; combative in nature.GRE pusillanimousShowing a lack of courage or determination; timid and cowardly.GRE pythagoreanRelating to the Pythagorean theorem, which states that in a right triangle, the …GRE

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quadraticInvolving the second power (square) of a variable; a quadratic equation has the …GRE quadrilateralA polygon with four sides and four angles; examples include squares, rectangles,…GRE quagmireA difficult, precarious, or complex situation from which it is hard to extricate…GRE qualifiedLimited or restricted in meaning; not absolute; modified by conditions or except…GRE quartA unit of liquid capacity equal to one-fourth of a gallon or two pints (approxim…GRE quarterOne of four equal parts into which something is divided; one-fourth (1/4 or 25%)…GRE quaternionA number system that extends complex numbers, consisting of four components (one…GRE querulousHabitually complaining in a whining or petulant manner.GRE queryA question or inquiry, especially one expressing doubt or requesting information…GRE quixoticExceedingly idealistic; unrealistic and impractical, especially in the pursuit o…GRE quotientThe result obtained by dividing one number by another.GRE

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raconteurA person who tells anecdotes and stories in a skillful and entertaining way.GRE rancorBitter, deep-seated resentment or ill will; lasting hostility.GRE rancorousCharacterized by bitterness, deep-seated ill will, or resentment.GRE rangeThe difference between the largest and smallest values in a data set; also, the …GRE · TOEFL · IELTS rapaciousAggressively greedy or grasping; given to seizing what is desired.GRE rarefiedBelonging to or appealing to a select, elevated, or exclusive group; esoteric.GRE ratioA quantitative relation between two amounts showing the number of times one valu…GRE rationalA number that can be expressed as the quotient of two integers, where the denomi…GRE raucousMaking or constituting a disturbingly harsh, loud, and unpleasant noise.GRE rebuffTo reject or refuse bluntly or ungraciously; a blunt or abrupt refusal.GRE rebukeTo express sharp disapproval or criticism of someone because of their behavior.GRE rebusA puzzle in which words or phrases are represented by combinations of pictures, …GRE recalcitrantStubbornly resistant to authority, control, or guidance; uncooperative.GRE recantTo formally withdraw or disavow a previously held belief or statement.GRE recapitulateTo summarize and restate the main points of an argument or discussion.GRE recidivismThe tendency of a convicted criminal to reoffend; a relapse into previous undesi…GRE reciprocalThe multiplicative inverse of a number; for any nonzero number a, its reciprocal…GRE recluseA person who lives a solitary life and tends to avoid the company of others.GRE reconditeLittle known or understood; dealing with subject matter that is abstruse or obsc…GRE rectifyTo put right; to correct an error, fault, or undesirable situation.GRE redolentStrongly reminiscent or suggestive of something; having a rich, pleasant smell.GRE redoubtableFormidable, especially as an opponent; commanding respect or fear.GRE redundantNo longer needed or useful; containing more words or data than necessary to conv…GRE refractoryStubbornly resistant to authority or control; difficult to manage or treat.GRE regaleTo entertain or delight someone with conversation, stories, or good food and dri…GRE regressionA statistical method for modeling the relationship between a dependent variable …GRE remainderThe amount left over after division when one integer does not divide evenly into…GRE remonstrateTo make a forceful, reasoned protest or objection against something.GRE repertoireThe complete range of skills, techniques, or works that a person or group is pre…GRE replenishTo fill or build up something again; to restore to a former level or condition.GRE reprieveA temporary relief or postponement of punishment, suffering, or an unpleasant ob…GRE · SAT reproachTo express disapproval of or disappointment in someone; to censure or rebuke.GRE reprobateAn unprincipled or morally depraved person; one without moral scruples.GRE repudiateTo refuse to accept, acknowledge, or be associated with; to reject as invalid or…GRE · SAT rescindTo revoke, cancel, or repeal a law, order, or agreement.GRE · SAT resoluteAdmirably purposeful, determined, and unwavering in pursuit of a goal.GRE resolutionA firm decision to do or not do something; the quality of being determined or re…GRE · SAT · TOEFL resolvedFirmly determined to do something; having made a definite decision.GRE resonantHaving the quality of resounding or evoking strong images, memories, or emotions…GRE · SAT restiveUnable to remain still, silent, or submissive, especially because of boredom or …GRE reticentNot revealing one's thoughts or feelings readily; reserved and uncommunicative.GRE · SAT revereto feel deep respect or admiration for something or someone; to venerateGRE · SAT rhombusA parallelogram with four equal sides, where opposite angles are equal.GRE riemannRelating to Bernhard Riemann's mathematical work, especially the Riemann sum use…GRE rootA value that, when substituted into an equation, makes it true; equivalently, a …GRE rubricA set of established rules, guidelines, or criteria used for assessment or class…GRE rudimentaryRelating to the most basic or fundamental level; undeveloped or elementary.GRE rueTo feel regret or sorrow for something done or left undone.GRE

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sacrosanctRegarded as too important or valuable to be interfered with; inviolable.GRE · SAT sagaciousHaving or showing keen discernment, sound judgment, and farsightedness.GRE · SAT sageA person of profound wisdom and judgment, especially one revered for experience …GRE · SAT salubriousConducive to health or well-being; wholesome.GRE · SAT sanctimoniousMaking a hypocritical show of religious devotion or moral superiority.GRE · SAT sanctionTo give official permission or approval; also, a penalty imposed for violating a…GRE · SAT sanguineOptimistic or positive, especially in a difficult situation.GRE · SAT sartorialRelating to tailoring, clothing, or style of dress.GRE satiateTo satisfy a desire or appetite fully, often to the point of excess.GRE saturnineHaving a gloomy, morose, or sullen temperament.GRE scaleneA triangle in which all three sides have different lengths and all three angles …GRE secreteTo produce and discharge a substance from a cell or gland; also, to conceal in a…GRE sectorA region of a circle enclosed by two radii and the arc between them.GRE · IELTS segmentA part of a line bounded by two endpoints; also, a region of a circle cut off by…GRE seismicOf enormous proportions or effect; relating to a sudden and dramatic upheaval.GRE · TOEFL · IELTS semblanceThe outward appearance or apparent form of something, especially when the realit…GRE sentimentA view or opinion held or expressed; also, a feeling or emotion evoked by someth…GRE sequenceAn ordered list of numbers following a specific pattern or rule, where each elem…GRE · TOEFL · IELTS sequentialArranged or occurring in a specific order, where each element follows logically …GRE seriesThe sum of the terms of a sequence, either finite or infinite.GRE servileExcessively willing to serve or please others; showing a lack of independence or…GRE · SAT shapeA geometric figure defined by its boundary, such as a circle, triangle, or polyg…GRE simplifyTo reduce a mathematical expression to its most basic or compact form without ch…GRE · TOEFL · IELTS sineA trigonometric function equal to the ratio of the side opposite a given angle t…GRE sinecureA position or office that requires little or no work but provides a salary or in…GRE singularExceptionally remarkable or outstanding; beyond what is ordinary.GRE skepticA person inclined to question or doubt accepted opinions and claims.GRE sobrietyThe quality of being serious, sensible, and solemn; also, the state of being sob…GRE solicitorA person who seeks to obtain something, such as business or contributions; in la…GRE solicitousShowing attentive care or concern; anxiously eager to help or please.GRE soliloquyAn act of speaking one's thoughts aloud when alone, especially in a dramatic per…GRE solutionA value or set of values that satisfies a given equation or system of equations.GRE · TOEFL · IELTS solventHaving sufficient funds or assets to pay all debts; financially sound.GRE soporificTending to induce drowsiness or sleep; extremely dull or boring.GRE sovereignPossessing supreme power or authority; independent of outside control.GRE speciousSuperficially plausible but actually wrong or misleading.GRE spontaneousPerformed or occurring as a result of a sudden impulse, without premeditation or…GRE · TOEFL · IELTS spuriousNot genuine, authentic, or true; based on false reasoning or information.GRE stagnationThe state of not flowing or moving; lack of activity, growth, or development.GRE stentorianExtremely loud and powerful in sound.GRE stochasticRandomly determined; involving a process in which outcomes are described by a pr…GRE stoicA person who endures pain or hardship without showing emotion or complaint.GRE stratifiedArranged or classified into distinct layers, levels, or social strata.GRE striateMarked with parallel grooves, ridges, or streaks.GRE stridentLoud, harsh, and grating in sound or manner; aggressively forceful.GRE subsideTo become less intense, violent, or severe; to diminish gradually.GRE substantiateTo provide evidence or proof to support a claim or assertion.GRE substantiveHaving a firm basis in reality; meaningful, important, and worthy of considerati…GRE subterfugeDeceit or trickery used to achieve one's goal.GRE subtleSo delicate or precise as to be difficult to detect or describe; making use of c…GRE subtractionThe arithmetic operation of finding the difference between two numbers by removi…GRE succorAssistance and support given to someone in difficulty or distress.GRE suffrageThe right to vote in political elections.GRE superciliousBehaving or looking as though one thinks one is superior to others; disdainfully…GRE superfluousExceeding what is sufficient or necessary; more than what is needed.GRE supineLying face upward; also, failing to act or protest as a result of moral weakness…GRE surfaceThe two-dimensional boundary of a three-dimensional object; the total area of al…GRE surfeitAn excessive amount of something; overindulgence.GRE surreptitiousKept secret because it would not be approved of; done stealthily.GRE sycophantA person who flatters someone important in order to gain advantage.GRE symmetryA property of a figure or object whereby it is invariant under a transformation …GRE

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tacitunderstood or implied without being stated directly; silentGRE · SAT taciturnReserved or uncommunicative in speech; saying little.GRE talismanAn object thought to have magic powers and to bring good luck.GRE · SAT tangentA straight line that touches a curve at exactly one point without crossing it; a…GRE · SAT tangentialOnly marginally related to the matter at hand; diverging from the main point.GRE tantamountEquivalent in seriousness, effect, or value.GRE tautologyThe saying of the same thing twice in different words, generally considered a fa…GRE tawdryShowy but cheap and of poor quality; morally low or distasteful.GRE · SAT temerityExcessive confidence or boldness; audacity or reckless daring.GRE temperanceModeration or self-restraint, especially in eating and drinking.GRE tenaciousHolding firmly to something; persistent and determined.GRE · SAT tenuousVery weak, slight, or insubstantial; lacking a sound basis.GRE · SAT terrestrialOf or relating to the earth or its inhabitants; living on or in the ground.GRE tessellationA pattern of shapes that fit together without any gaps or overlaps to cover a pl…GRE theocracyA system of government in which priests or religious leaders rule in the name of…GRE theoremA mathematical statement that has been proven true through logical deduction fro…GRE tiradeA long, angry, and vehement speech of censure or denunciation.GRE · SAT toadyA person who flatters and defers to others in a servile way for personal gain.GRE topologyThe branch of mathematics concerned with properties of space that are preserved …GRE tortuousFull of twists, turns, and complexity; excessively lengthy and indirect.GRE tractableEasy to control, manage, or deal with; responsive to guidance.GRE · SAT transcendTo go beyond the range or limits of something; to surpass.GRE transformationA function that maps a geometric figure to a new position, size, or orientation,…GRE · IELTS transientlasting only for a short time; staying only briefly; temporaryGRE · SAT transversalA line that intersects two or more other lines at distinct points.GRE trapezoidA quadrilateral with exactly one pair of parallel sides, called the bases.GRE travailPainful or laborious effort; a state of hardship and suffering.GRE travestyA false, absurd, or distorted representation of something.GRE treatiseA formal and systematic written work dealing in depth with a particular subject.GRE trepidationa feeling of fear or agitation about something that may happenGRE · SAT truculentEager or quick to argue or fight; aggressively defiant.GRE turbulenceA state of violent disturbance, disorder, or commotion.GRE turgidSwollen, distended, or bloated; of language, pompously bombastic or dull.GRE

U

unconscionableNot right or reasonable; shockingly unfair or unjust.GRE unctuousExcessively flattering or ingratiating; oily in manner.GRE · SAT uniformNot changing in form or character; remaining the same in all cases.GRE · TOEFL · IELTS usurpTo seize and hold power, position, or rights by force or without legal authority…GRE · SAT

V

vacillatingWavering between different opinions or actions; irresolute.GRE vacuousHaving or showing a lack of thought or intelligence; empty and purposeless.GRE vagrantA person without a settled home or regular work who wanders from place to place.GRE valueThe numerical quantity assigned to a variable, expression, or function; the resu…GRE vapidOffering nothing that is stimulating or challenging; dull and uninspired.GRE variableA symbol, usually a letter, that represents an unknown or changeable quantity in…GRE · TOEFL · IELTS variegatedExhibiting different colors, tones, or forms; marked by variety or diversity.GRE vauntTo boast about or praise something excessively.GRE vectorA quantity that has both magnitude and direction, often represented as a directe…GRE vehementShowing strong feeling; forceful, passionate, or intense.GRE velocityThe rate of change of an object's position with respect to time, including both …GRE · TOEFL · IELTS veneerA superficial or deceptively attractive appearance that conceals the true nature…GRE venerateTo regard with great respect and reverence.GRE venialDenoting a fault or offense that is minor and easily forgiven.GRE veraciousSpeaking or representing the truth; truthful and accurate.GRE veracityConformity to facts; habitual truthfulness and accuracy.GRE verbiageSpeech or writing that uses too many words or excessively technical expressions.GRE verisimilitudeThe appearance of being true or real; the quality of seeming believable.GRE veritableUsed for emphasis, meaning genuine or actual; true.GRE vertexThe point where two or more lines, edges, or rays meet to form an angle; a corne…GRE verticalPerpendicular to the horizontal plane; extending straight up and down.GRE vertigoA sensation of dizziness and disorientation, as if the surroundings are spinning…GRE vilifyTo speak or write about in an abusively disparaging manner; to defame.GRE vindicateTo clear someone of blame or suspicion; to prove that something is justified or …GRE vindictiveHaving or showing a strong desire for revenge; disposed to seek vengeance.GRE virtuosoA person highly skilled in music or another artistic pursuit; someone with maste…GRE virulentExtremely severe or harmful in effect; bitterly hostile or antagonistic.GRE visceralRelating to deep inward feelings rather than to the intellect; instinctive and g…GRE vituperateTo blame or insult someone in strong or violent language.GRE voraciousHaving a very eager approach to an activity; wanting or devouring great quantiti…GRE vortexA whirling mass of fluid or air, especially a whirlpool or whirlwind; a situatio…GRE

W

wanPale and giving the impression of illness or exhaustion; lacking vitality.GRE warrantTo justify or necessitate a course of action; to serve as adequate grounds for s…GRE waryFeeling or showing caution about possible dangers or problems.GRE · SAT widthThe measurement of the extent of something from side to side; the shorter of two…GRE wistfulHaving or showing a feeling of vague or regretful longing.GRE

Z

zealotA person who is fanatical and uncompromising in pursuit of their religious, poli…GRE