TOEFL iBT頻出単語一覧

アメリカ大学留学を目指す方必見。TOEFL iBT対策に必須のAcademic Word List（学術語彙リスト）と頻出単語を約2,000語収録。

収録単語数

3138語

カバー範囲

Reading / Listening / Speaking / Writing

対象スコア

60-120点

🎓

Academic Word List収録

大学レベルの学術論文やレクチャーで頻出する語彙を網羅

📊

スコア別に分類

目標スコアに合わせて効率的に学習できる3段階構成

🌐

4技能すべてに対応

Reading、Listening、Speaking、Writing全セクションの語彙をカバー

🇺🇸

アメリカ留学対応

アメリカの大学・大学院留学に必要な語彙力を養成

スコア別単語一覧

60-80点レベル

基礎語彙 - TOEFL入門者向け

単語一覧を見る →

80-100点レベル

中級語彙 - スコアアップを目指す方向け

単語一覧を見る →

100点以上レベル

上級語彙 - 高得点を目指す方向け

単語一覧を見る →

TOEFL iBTとは

TOEFL iBT（Test of English as a Foreign Language Internet-based Test）は、アメリカのETSが運営する英語能力試験です。主にアメリカ・カナダの大学や大学院への入学時に英語力の証明として求められます。

試験構成（4技能）

• Reading: 35分（2パッセージ）
• Listening: 36分
• Speaking: 16分（4タスク）
• Writing: 29分（2タスク）

スコア目安

• 60点: 一般的な大学の最低要件
• 80点: 有名大学の平均要件
• 100点: トップ大学の推奨スコア
• 110点以上: 難関大学院レベル

アルファベット別索引

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

全単語一覧（3138語）

A

aberration abjure abolish abrupt abscond abstain abstemious abstract abstraction abundance abysmal academic accelerate accentuate access accolade accommodate accompany account accumulate accuracy accurate achieve achievement acid acknowledge acquire acquisition acrimony active activity actual acute adamant adapt adaptation addition adequate adhere adjacent adjacent adjust administration admonish adroit adulation advantage advent advent adverse adversity advertising advice advocate aesthetic affable affect affiliate affinity affluent agency agenda aggrandize aggregate agitate agreement agriculture aid aim alacrity albeit alchemy allegation allegory alleviate allocate allot alter alternative alternative altruism ambiguity ambiguous ameliorate amenable amend amount ample anachronism analogy analysis analyze anathema ancient animate animosity annual anomaly anonymous antagonist antecedent anthropology anticipate antipathy antiquated antithesis apathy apex aplomb apotheosis apparatus apparent appease application apply appraise apprehend apprehension approach appropriate approximate apropos aptitude arbitrary arbitrary arcane archaeology archaic archetype architecture ardent arduous area argue argument arraign arrangement art articulate artificial ascertain ascetic aspect aspersion aspiration assemble assert assess assessment assiduous assignment assimilate assist assistance association assuage assume assumption astronomy astute atmosphere atom atrophy attach attain attempt attention attenuate attitude attribute audacious audience augment auspicious austere authentic authority authorize automatic autonomous available avarice averse avoid awareness axiom

C

cacophony cadence cajole calamity calculate calibrate callous calumny campaign candid candor canvass capable capacity capitalism capitulate capricious carbon cardinal career case castigate catalyst catastrophe category cause cause caustic cautious cavalier cease cede cell censure census center central certain certify chagrin challenge challenge change chaos characteristic characterize charlatan chastise chemical chemistry chicanery chimera choice choose chronic churlish circuitous circumference circumscribe circumspect circumstance circumstantial cite citizen civil civilization claim claim clamorous clandestine clarify clarity clarity class classic classification classify clause clear clemency client climate clinical coalesce coalition code coerce coercion cogent cognitive cognitive cognizant coherent coincide collaborate collaboration collapse collateral collection collective colloquial combination combine commemorate commence commend commensurate comment commentary commerce commercial commitment commodity common communicate communication community compare comparison compatible compel compelling compendium compensate compensate compete competent competition compile compile complacency complacent complement complement complete complex complexity compliance complicate complicity comply component compose composition compound comprehensive comprise compromise compulsory compunction compute concatenate concede conceive concentrate concentration concept concern conciliatory concise conclude conclusion concord concrete concurrent condemn condense condescend condition conditional conduct conference confidence confine confirm conflagration conflict conflict confluence conform conform confront congenial congestion conglomerate conjecture conjure connect connection connive connoisseur conscience conscious consecrate consensus consent consequence conserve consider considerable consideration consist consistent consolidate conspicuous constant consternation constitute constrain construct construction construe consult consultation consume consummate consumption contact contain contaminate contemplate contemporary contend content contentious context context contiguous continent contingent continue continuous contract contradict contrary contrast contribute contribution contrite control controversial controversy conundrum convene convention conventional converge conversion convert convey conviction convince convivial cooperate cooperation coordinate coordination copious core core corollary corporate corporation corporeal correct correlate correlation correspond corroborate cosmopolitan cost council countenance counterfeit countermand counterpart covenant covert covet craven create creation creative credence credible credit credulity crescendo crisis criterion criterion critical criticism criticize crucial cryptic culminate culpable cultivate cultural culture cumulative cupidity curb currency current curriculum cursory curtail custody cycle cynic cynical

D

damage data database dearth debacle debate debilitate debunk decade decadence decipher decision decisive declaration decline decline decorum decrease decrease decree decrepit decry dedicate deduce deem default defect defend defer deference deficiency deficit define definition degenerate degree delay delegate deleterious deliberate deliberate delicate delineate delinquent demagogue demand demeanor demise democracy democratic demographic demonstrate demonstration demure denigrate denizen denote denounce density density deny department depend dependent depict deplete deploy depravity deprecate depreciate depression depth derelict deride derivative derive derive describe description desecrate desiccate design design designate desire desolate despotic destination destitute destruction desultory detach detail detailed detect detection deter deteriorate determination determine detrimental develop development device devise devote diagnose diagnosis diagram dialogue diatribe dichotomy didactic differ difference different differentiate differentiate difficult difficulty diffident diffuse digital digress dilatory dilemma dilute dimension diminish diminutive direct direct direction disabuse disadvantage disaffected disappear discern discipline disclose discourse discourse discover discovery discrepancy discrete discriminate discrimination discuss discussion disdain disease dismal dismiss disparage disparity dispassionate dispel disperse displace display disposal dispose disproportionate dispute dispute disregard disrupt dissemble disseminate dissent dissident dissipate dissolution dissolve dissonance distend distinct distinct distinction distinguish distort distribute distribution dither diurnal diverge diverse diversity divest division divisive divulge doctrinaire doctrine document dogmatic dolorous domain domain domestic dominance dominant dominate dormant draconian draft draft dramatic drastically drawback dubious duplicity durable duration duty dwelling dynamic dynamics dynamics

E

earthquake ebullient eccentric eclectic eclipse ecology economic economy economy ecosystem edify edit edition educate education efface effect effective effervescent efficacious efficiency efficient effort effrontery effusive egalitarian egregious elaborate electronic elegy element element elicit eligible eliminate eloquent elucidate elusive emaciate emanate embargo embark embed embellish embody embrace embroil emerge emergence emergence eminent emission emit emollient emotion emotional emphasis emphasize empirical empirical employ employment emulate enable enact encompass encounter encourage endemic endorse endow endure energy energy enervate enforce engagement engender engross enhance enhancement enigma enlighten enmity ennui enormity enormous enrich ensue ensure entail enterprise enterprise enthrall entice entire entity entity entrepreneur entry enumerate environment environment environmental ephemeral epidemic epiphany episode epitome equal equality equanimity equate equation equilibrium equipment equity equivalent equivocate era eradicate erode erosion erratic error erudite escalate eschew esoteric espouse essay essence essence essential establish establishment esteem estimate ethereal ethnic ethnic euphemism euphoria evade evaluate evaluation evanescent event eventual evidence evident evolution evolution evolve exacerbate exacerbation exact exaggerate exalt examination examine example exasperate exceed excel exception excerpt excessive exchange exclaim exclude exclusion exclusive execrate execute execution exemplify exempt exercise exert exhaust exhibit exhort exigent exile exist existence exonerate expand expansion expatriate expect expectation expedient expenditure expense experience experiment experiment experimental expert expiate explain explanation explicit explicit exploit exploration explore exponential export expose exposure expound express expression expunge expurgate extant extend extension extensive extent extenuate external extinct extinguish extol extract extract extraction extraneous extrapolate extreme extrinsic

I

iconoclast ideal identical identify identity ideological ideology idiosyncrasy ignite ignominious illicit illuminate illustrate illustration image imagination imbibe imbue immaculate immediate immense imminent immune immutable impact impact impair impart impasse impassive impeccable impecunious impede imperative imperial impervious impetuous impetus implement implementation implicate implication implicit implicit implore imply impolitic import importance important importune impose impose impoverish imprecise impregnable impression impressive improve improvement impudent impugn impulse impunity inadequate inaugurate inauspicious incandescent incentive incentive inchoate incidence incident incipient incisive inclement incline include inclusion inclusive income incongruous inconsequential incontrovertible incorporate incorrigible increase increase incredulous incur indefatigable indelible independence independent index indicate indication indicator indifferent indigenous indigenous indigent indignant indirect indispensable individual indolent indomitable induce industrial industry industry ineffable ineludible inequality inevitable inexorable infallible infamous infelicitous infer inference infiltrate infinite infinitesimal inflate inflation inflict influence influence influential influx inform information infrastructure infrastructure infringe ingenious ingenuous inherent inherent inherit inhibit inimical iniquity initial initiate initiative inject injury innate inner innocuous innovate innovate innovation innovative innuendo inordinate input inquire inquiry inquiry inscribe inscrutable insert insidious insight insolent insouciant inspect inspection inspire install instance instigate institute institution institutional instruct instruct instruction instrument insufficient insulate insurance insurgence insurgent intact intangible integral integral integrate integrate integration integrity integrity intellectual intelligence intelligent intense intensify intensity intention interact interaction interactive intercept interest interference interim interlocutor intermediate intermediate interminable intermittent internal international internecine interpolate interpret interpretation interval intervene intervention intimate intimate intractable intransigent intrepid intricate intrinsic intrinsic introduction intrude intuition inundate inure invalid invalidate invective invest investigate investigation investment inveterate invidious invigorate invincible invoke involve involvement irascible irate irksome ironic irreverent irreversible isolate isolate isolation issue item itinerant

J

jaded jeopardize jingoism jocular joint journal journalism judgment judicial judicious junior jurisdiction justice justification justify justify juxtapose

K

M

machination magnanimous magnitude main mainstream maintain maintenance major major majority malevolent malfeasance malfunction malicious malingerer malleable manage management mandate mandate manifest manifold manipulate manipulate manipulation manner manual manufacture margin margin marginal marginalize marine mark market martial martinet mass massive match material material mathematical matrix matter mature mature maudlin maverick mawkish maximize maximum measure mechanical mechanism media mediate mediate medical medieval meditate medium member memorandum memory mendacious mendicant mental mention mention mercenary mercurial meretricious merge merit message metamorphosis metaphor method methodology meticulous meticulous migrate migrate migration milestone milieu military mimic minatory minimal minimize minimize minimum minor minority misanthrope misconception miscreant miser misleading misnomer mitigate mixture mobile mobilize mode model moderate modern modicum modification modify modify molecule mollify momentum momentum monitor monolithic monopoly monotonous moral moratorium moribund morose motion motivate motivation motive motley movement multifarious multiple multitude mundane municipal munificent music mutual mutual myriad

P

pace palliate palpable panacea panache pandemic pander panegyric panel paper paradigm paradigm paradox paragon paragraph parallel parameter parameter paramount paramount pariah parody parsimonious partial participant participate participation particular partisan partisan partner partnership passage passive past pastoral patent patent path pathological pathos patriarch patrician patronize patronize pattern paucity peak peccadillo peculiar pecuniary pedagogy pedantic pejorative pellucid penalty penchant pending penetrate penitent penurious perceive perceive percent perception perennial perfidious perform performance perfunctory period peripatetic peripheral perish perjury permanent permeate permission permit pernicious perpetrate perpetuate persevere persist persistent person personal perspective perspicacious persuade persuasive pertinent perturb peruse pervasive pessimistic pestilence petition petulant phase phenomenon phenomenon philanthropy philistine philosophy phlegmatic physical physics piety pillory pinnacle pious pique pithy pittance pivotal placate placid plague plain plaintive plan plastic platform platitude plaudits plausible pledge plethora pliable plight plot plunge poignant point polarize polemic policy political politics poll ponderous pontificate popular population portent portfolio portion portray position positive possess possibility posthumous postulate potent potential potential power practical practice pragmatic pragmatic prate precarious precede precedent precept precipitate precise precision preclude preconceive precursor predecessor predetermine predicament predict prediction predilection predispose predominant predominate preeminent preempt preen prefer preference preliminary premise premise preparation prepare preposterous prerogative prescribe presence present presentation presentiment preserve preserve preside pressure pressure prestige presume prevail prevalent prevaricate prevent prevention previous price priggish primary prime principal principle principle prior prioritize priority pristine private privatize privilege probability probable probe probity problem procedure proceed process process proclaim proclivity procure prodigal prodigious produce product production profession professional proficient profile profit profligate profound profound progeny prognosis program progress progressive prohibit prohibit project project proliferate prolific prolix prolong prominent prominent promote promotion promulgate prone proof propagate propel propensity proper property prophetic propitiate propitious proponent proportion proportional proposal propose propriety prosaic proscribe prosecute proselytize prospect prospective prospective prosper prostrate protect protection protocol prototype protract provide provident provincial provision provoke proximity prudent psychology public publication publicize publish pugnacious pulchritude punctilious punctual pungent pure purport purpose pursue pursue pursuit pusillanimous

Q

quaff quagmire qualify qualitative quality qualm quandary quantitative quantity querulous quest question question quiescent quintessential quixotic quota quotation quote quotidian

R

raconteur radical radical raise ramification rampant rancor random random range range rank rapacious rapid rare rarefied rate ratify ratio rational rational rationale raucous raw react reaction reaction reactionary real realistic reality realize realm reap reason reason reasonable reassure rebate rebuke recalcitrant recant recapitulate recede receive recent recidivism reciprocal reckon reclaim recognition recognize recommend recommendation reconcile recondite reconstruct record record recourse recover recovery rectitude recurrent redolent redoubtable redress reduce reduction redundant refer reference referendum refine reflect reflection reform reform refractory refrain refuse refute regale regard regime region regional register registration regular regulate regulation rehabilitate reign reimburse reinforce reiterate reject rejection relate relation relationship relative release release relegate relentless relevance relevant reliable reliance relief religion relinquish relish reluctant rely remain remainder remedy remedy reminiscent remit remnant remonstrate remote removal remove rend render renewal renounce renovate repast repeal repeat repercussion replace replacement replete replicate replication report report reprehensible represent representation representative reprise reproach reprobate reproduce reproduction reprove repudiate repugnant reputation request require requirement requisite rescind rescission research reside residential residual resign resilient resolute resolution resolve resort resource resource resplendent respond response responsibility responsible restitution restive restoration restore restrain restrict restricted restriction result resume resurgent retain retain retaliate retard retention reticent retirement retribution retrieve retrospect return reveal reveal revenue revenue revere reverie reversal reverse reverse review revise revise revision revive revolt revolution reward rhetoric ribald rife rigid rigor rigorous risk rival robust robust roil role rough route rule ruminative rupture rural rustic

S

saccharine sacrilege sacrosanct safeguard safety sagacious salient salutary sample sanctimonious sanction sanction sanguine sardonic satiate satirize satisfaction satisfy saturate savor scaffold scale scant scarce scathing scenario scenario scene schedule schedule scheme schism scholarship scientific scintillate scope score scrupulous scrutiny search season seat secondary section section sector secular secure security sediment sedition sedulous seek segment segment seize select selection self-deprecating seminar senior sense sensitive sensitivity sentence sententious separate separate separation sequence sequence sequential serendipity series serious serve service servile session setback setting settle settlement severe severe sexual shape share sharp shibboleth shift shift shortage shrewd shun sibylline side signal signal significance significant significant similar similar simpering simple simplify simulate simulation simultaneous single singular sinuous site situation size skeptical skill skullduggery slander slight sloth slovenly sluggish smooth smug soar social society sociology sodden solace solar solicitous solid solidarity solitary solution solution solve somnolent sophisticate sophisticated sophomoric soporific sordid sort sort source sovereign space span sparse spatial spawn special specialist specialize species specific specific specification specify specious spectrum speculate speech spendthrift sphere sphere spiral spirit spontaneous sporadic spotlight spur spurious squalid squander stability stabilize stabilize stable staff stage stagnant staid stake stalwart stance stance standard standard stanza stark state state statement static stationary statistical statistics status statute staunch steadfast steady stentorian step stereotype stifle stigma stigmatize stimulate stimulus stimulus stipulate stock stoic storage store strain strand strategic strategic strategy streamline strength strenuous stress stress strict stride strident stringent stringent strive strong structural structure structure study stupefy style stymie suave subject subject subjugate sublime submission submit subordinate subsequent subsequent subservient subside subsidiary subsidize substance substantial substantiate substantive substitute substitute substitution subterfuge subtle subtle subtract subvert succeed success succession succinct succumb sue suffice sufficient suffragist suggest suggestion suitable sully sum summarize summary summit summit sumptuous sundry supercilious superfluous superfluous superior supersede supervision supine supplant supplement supplement supplicant supply supply support support suppose suppress supreme surcharge surface surfeit surge surmount surplus surplus surreptitious surrogate surround surveillance survey survey survival survive susceptible suspend suspend sustain sustain sustainable swamp sway sycophant sylvan symbol symbolic symmetry symptom symptom synchronize syndrome synthesis synthesis system systematic

T

table tacit taciturn tackle tactic tangible tantalize tantamount target target tariff task tawdry tax teach technical technique technology technology temerity temperament temperature tempestuous temporary tenable tenacious tend tendency tendentious tenet tension tentative tenure tepid term terminate terminate terrain terrestrial territory terse test testify testimony text texture theater theme theoretical theory therapy thereby thesis thesis thorough thorough threat threshold thrive thrust tight tirade titillate title toady tolerance tolerate tone tool topic torpid total total touchstone tout trace trace track track tractable trade tradition tradition traditional traffic trait trajectory transaction transcend transfer transfix transform transformation transgression transient transition transmission transmit transmit transparent transport transport transportation trauma travail traverse travesty treat treatment treaty treaty tremendous tremendous trenchant trend trepidation trial trigger trigger trigger trite trivial tropical truculence truculent trust truth turbulent turmoil turn turpitude tutelage type typical tyranny

X

Y

yearn yield yield yoke

Z

zeal zealot zeitgeist zenith zephyr zone