5000+ Commonly Used IELTS and TOEFL Words

This page features IELTS and TOEFL words that you may see or hear on the reading and/or listening sections of the TOEFL and IELTS tests. Becoming familiar with these and similar words will also help you on the writing and speaking portions of the tests.

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Page #10 - 2251-2500 Words

2251
imperilverb
To endanger.
2252
imperiousadjective
Insisting on obedience.
2253
impermissibleadjective
Not permissible.
2254
impersonaladjective
Not relating to a particular person or thing.
2255
impersonateverb
To appear or act in the character of.
2256
impersuadableadjective
Unyielding.
2257
impertinencenoun
Rudeness.
2258
imperturbableadjective
Calm.
2259
imperviousadjective
Impenetrable.
2260
impetuositynoun
Rashness.
2261
impetuousadjective
Impulsive.
2262
impetusnoun
Any impulse or incentive.
2263
impietynoun
Irreverence toward God.
2264
impiousadjective
Characterized by irreverence or irreligion.
2265
implausibleadjective
Not plausible.
2266
impliableadjective
Capable of being inferred.
2267
implicateverb
To show or prove to be involved in or concerned
2268
implicitadjective
Implied.
2269
implyverb
To signify.
2270
impoliticadjective
Inexpedient.
2271
importationnoun
The act or practice of bringing from one country into another.
2272
importunateadjective
Urgent in character, request, or demand.
2273
importuneverb
To harass with persistent demands or entreaties.
2274
impotentadjective
Destitute of or lacking in power, physical, moral, or intellectual.
2275
impoverishverb
To make indigent or poor.
2276
impracticableadjective
Not feasible.
2277
impregnableadjective
That can not be taken by assault.
2278
impregnateverb
To make pregnant.
2279
impromptunoun
Anything done or said on the impulse of the moment.
2280
improperadjective
Not appropriate, suitable, or becoming.
2281
improprietynoun
The state or quality of being unfit, unseemly, or inappropriate.
2282
improvidentadjective
Lacking foresight or thrift.
2283
improviseverb
To do anything extemporaneously or offhand.
2284
imprudentadjective
Heedless.
2285
impudencenoun
Insolent disrespect.
2286
impugnverb
To assail with arguments, insinuations, or accusations.
2287
impulsionnoun
Impetus.
2288
impulsiveadjective
Unpremeditated.
2289
impunitynoun
Freedom from punishment.
2290
impureadjective
Tainted.
2291
imputeverb
To attribute.
2292
inaccessibleadjective
Difficult of approach.
2293
inaccurateadjective
Not exactly according to the facts.
2294
inactiveadjective
Inert.
2295
inadequateadjective
Insufficient.
2296
inadmissibleadjective
Not to be approved, considered, or allowed, as testimony.
2297
inadvertentadjective
Accidental.
2298
inadvisableadjective
Unadvisable.
2299
inaneadjective
Silly.
2300
inanimateadjective
Destitute of animal life.
2301
inapprehensibleadjective
Not to be understood.
2302
inaptadjective
Awkward or slow.
2303
inarticulateadjective
Speechless.
2304
inaudibleadjective
That can not be heard.
2305
inbornadjective
Implanted by nature.
2306
inbredadjective
Innate.
2307
incandescencenoun
The state of being white or glowing with heat.
2308
incandescentadjective
White or glowing with heat.
2309
incapacitateverb
To deprive of power, capacity, competency, or qualification.
2310
incapacitynoun
Want of power to apprehend, understand, and manage.
2311
incarcerateverb
To imprison.
2312
incendiarynoun
Chemical or person who starts a fire-literally or figuratively.
2313
incentivenoun
That which moves the mind or inflames the passions.
2314
inceptionnoun
The beginning.
2315
inceptiveadjective
Beginning.
2316
incessantadjective
Unceasing.
2317
inchmealadverb
Piecemeal.
2318
inchoateadjective
Incipient.
2319
inchoativenoun
That which begins, or expresses beginning.
2320
incidencenoun
Casual occurrence.
2321
incidentnoun
A happening in general, especially one of little importance.
2322
incidentallyadverb
Without intention.
2323
incinerateverb
To reduce to ashes.
2324
incipiencenoun
Beginning.
2325
incipientadjective
Initial.
2326
incisornoun
A front or cutting tooth.
2327
inciteverb
To rouse to a particular action.
2328
incitementnoun
That which moves to action, or serves as an incentive or stimulus.
2329
incoercibleadjective
Incapable of being forced, constrained, or compelled.
2330
incoherencenoun
Want of connection, or agreement, as of parts or ideas in thought, speech, etc.
2331
incoherentadjective
Not logically coordinated, as to parts, elements, or details.
2332
incombustibleadjective
That can not be burned.
2333
incomparableadjective
Matchless.
2334
incompatibleadjective
Discordant.
2335
incompetencenoun
General lack of capacity or fitness.
2336
incompetentadjective
Not having the abilities desired or necessary for any purpose.
2337
incompleteadjective
Lacking some element, part, or adjunct necessary or required.
2338
incomprehensibleadjective
Not understandable.
2339
incompressibleadjective
Resisting all attempts to reduce volume by pressure.
2340
inconceivableadjective
Incomprehensible.
2341
incongruousadjective
Unsuitable for the time, place, or occasion.
2342
inconsequentialadjective
Valueless.
2343
inconsiderableadjective
Small in quantity or importance.
2344
inconsistentadjective
Contradictory.
2345
inconstantadjective
Changeable.
2346
incontrovertibleadjective
Indisputable.
2347
inconvenientadjective
Interfering with comfort or progress.
2348
indefensibleadjective
Untenable.
2349
indefinitelyadverb
In a vague or uncertain way.
2350
indelibleadjective
That can not be blotted out, effaced, destroyed, or removed.
2351
indescribableadjective
That can not be described.
2352
indestructibleadjective
That can not be destroyed.
2353
indicantadjective
That which points out.
2354
indicatornoun
One who or that which points out.
2355
indictverb
To find and declare chargeable with crime.
2356
indigencenoun
Poverty.
2357
indigenousadjective
Native.
2358
indigentadjective
Poor.
2359
indigestibleadjective
Not digestible, or difficult to digest.
2360
indigestionnoun
Difficulty or failure in the alimentary canal in changing food into absorptive nutriment.
2361
indignantadjective
Having such anger and scorn as is aroused by meanness or wickedness.
2362
indignitynoun
Unmerited contemptuous conduct or treatment.
2363
indiscernibleadjective
Not perceptible.
2364
indiscreetadjective
Lacking wise judgment.
2365
indiscriminateadjective
Promiscuous.
2366
indispensableadjective
Necessary or requisite for the purpose.
2367
indistinctadjective
Vague.
2368
indivertibleadjective
That can not be turned aside.
2369
indivisibleadjective
Not separable into parts.
2370
indolencenoun
Laziness.
2371
indolentadjective
Habitually inactive or idle.
2372
indomitableadjective
Unconquerable.
2373
inductverb
To bring in.
2374
indulgencenoun
The yielding to inclination, passion, desire, or propensity in oneself or another.
2375
indulgentadjective
Yielding to the desires or humor of oneself or those under one’s care.
2376
inebriateverb
To intoxicate.
2377
inedibleadjective
Not good for food.
2378
ineffableadjective
Unutterable.
2379
inefficientadjective
Not accomplishing an intended purpose.
2380
inefficiencynoun
That which does not accomplish an intended purpose.
2381
ineligibleadjective
Not suitable to be selected or chosen.
2382
ineptadjective
Not fit or suitable.
2383
inertadjective
Inanimate.
2384
inestimableadjective
Above price.
2385
inevitableadjective
Unavoidable.
2386
inexcusableadjective
Not to be justified.
2387
inexhaustibleadjective
So large or furnishing so great a supply as not to be emptied, wasted, or spent.
2388
inexorableadjective
Unrelenting.
2389
inexpedientadjective
Unadvisable.
2390
inexpensiveadjective
Low-priced.
2391
inexperiencenoun
Lack of or deficiency in experience.
2392
inexplicableadjective
Such as can not be made plain.
2393
inexpressibleadjective
Unutterable.
2394
inextensibleadjective
Of unchangeable length or area.
2395
infallibleadjective
Exempt from error of judgment, as in opinion or statement.
2396
infamousadjective
Publicly branded or notorious, as for vice, or crime.
2397
infamynoun
Total loss or destitution of honor or reputation.
2398
inferencenoun
The derivation of a judgment from any given material of knowledge on the ground of law.
2399
infernaladjective
Akin to or befitting hell or its occupants.
2400
infestverb
To be present in such numbers as to be a source of annoyance, trouble, or danger.
2401
infidelnoun
One who denies the existence of God.
2402
infidelitynoun
Disloyalty.
2403
infiniteadjective
Measureless.
2404
infinitynoun
Boundless or immeasurable extension or duration.
2405
infirmadjective
Lacking in bodily or mental strength.
2406
infirmarynoun
A place for the reception or treatment of the sick.
2407
infirmitynoun
A physical, mental, or moral weakness or flaw.
2408
inflammableadjective
Easily set on fire or excited.
2409
inflammationnoun
A morbid process in some part of the body characterized by heat, swelling, and pain.
2410
inflexibleadjective
That can not be altered or varied.
2411
influencenoun
Ability to sway the will of another.
2412
influentialadjective
Having the power to sway the will of another.
2413
influxnoun
Infusion.
2414
infrequencenoun
Rareness.
2415
infrequentadjective
Uncommon.
2416
infringeverb
To trespass upon.
2417
infuseverb
To instill, introduce, or inculcate, as principles or qualities.
2418
infusionnoun
The act of imbuing, or pouring in.
2419
ingeniousadjective
Evincing skill, originality, or cleverness, as in contrivance or arrangement.
2420
ingenuitynoun
Cleverness in contriving, combining, or originating.
2421
ingenuousadjective
Candid, frank, or open in character or quality.
2422
ingloriousadjective
Shameful.
2423
ingraftverb
To set or implant deeply and firmly.
2424
ingratiateverb
To win confidence or good graces for oneself.
2425
ingratitudenoun
Insensibility to kindness.
2426
ingredientnoun
Component.
2427
inherencenoun
The state of being permanently existing in something.
2428
inherentadjective
Intrinsic.
2429
inhibitverb
To hold back or in.
2430
inhospitableadjective
Not disposed to entertain strangers gratuitously.
2431
inhumanadjective
Savage.
2432
inhumeverb
To place in the earth, as a dead body.
2433
inimicaladjective
Adverse.
2434
iniquitynoun
Gross wrong or injustice.
2435
initiateverb
To perform the first act or rite.
2436
injectverb
To introduce, as a fluid, by injection.
2437
injunctionnoun
Mandate.
2438
inklingnoun
A hint.
2439
inlandadjective
Remote from the sea.
2440
inletnoun
A small body of water leading into a larger.
2441
inmostadjective
Deepest within.
2442
innocuousadjective
Harmless.
2443
innovateverb
To introduce or strive to introduce new things.
2444
innuendonoun
Insinuation.
2445
innumerableadjective
Countless.
2446
inoffensiveadjective
Causing nothing displeasing or disturbing.
2447
inopportuneadjective
Unsuitable or inconvenient, especially as to time.
2448
inquireverb
To ask information about.
2449
inquisitionnoun
A court or tribunal for examination and punishment of heretics.
2450
inquisitiveadjective
Given to questioning, especially out of curiosity.
2451
inquisitornoun
One who makes an investigation.
2452
inroadnoun
Forcible encroachment or trespass.
2453
insatiableadjective
That desires or craves immoderately or unappeasably.
2454
inscribeverb
To enter in a book, or on a list, roll, or document, by writing.
2455
inscrutableadjective
Impenetrably mysterious or profound.
2456
insecureadjective
Not assured of safety.
2457
insensibleadjective
Imperceptible.
2458
insentientadjective
Lacking the power of feeling or perceiving.
2459
inseparableadjective
That can not be separated.
2460
insidiousadjective
Working ill by slow and stealthy means.
2461
insightnoun
Intellectual discernment.
2462
insignificancenoun
Lack of import or of importance.
2463
insignificantadjective
Without importance, force, or influence.
2464
insinuateverb
To imply.
2465
insipidadjective
Tasteless.
2466
insistencenoun
Urgency.
2467
insistentadjective
Urgent.
2468
insolencenoun
Pride or haughtiness exhibited in contemptuous and overbearing treatment of others.
2469
insolentadjective
Impudent.
2470
insomnianoun
Sleeplessness.
2471
inspectornoun
An official appointed to examine or oversee any matter of public interest or importance.
2472
instancenoun
A single occurrence or happening of a given kind.
2473
instantnoun
A very brief portion of time.
2474
instantaneousadjective
Done without perceptible lapse of time.
2475
instigateverb
To provoke.
2476
instigatornoun
One who incites to evil.
2477
instillverb
To infuse.
2478
instructiveadjective
Conveying knowledge.
2479
insufficiencynoun
Inadequacy.
2480
insufficientadjective
Inadequate for some need, purpose, or use.
2481
insularadjective
Pertaining to an island.
2482
insulateverb
To place in a detached state or situation.
2483
insuperableadjective
Invincible.
2484
insuppressibleadjective
Incapable of being concealed.
2485
insurgencenoun
Uprising.
2486
insurgentnoun
One who takes part in forcible opposition to the constituted authorities of a place.
2487
insurrectionnoun
The state of being in active resistance to authority.
2488
intangibleadjective
Not perceptible to the touch.
2489
integritynoun
Uprightness of character and soundness of moral principle.
2490
intellectnoun
The faculty of perception or thought.
2491
intellectualadjective
Characterized by intelligence.
2492
intelligencenoun
Capacity to know or understand.
2493
intelligibleadjective
Comprehensible.
2494
intemperancenoun
Immoderate action or indulgence, as of the appetites.
2495
intensionnoun
The act of stringing or stretching, or state of being strained.
2496
intensiveadjective
Adding emphasis or force.
2497
intentionnoun
That upon which the mind is set.
2498
interactverb
To act reciprocally.
2499
intercedeverb
To mediate between persons.
2500
interceptverb
To interrupt the course of.