Idée fixe- infatuation, mania, fetish, obsession
Idiocy- inanity, absurdity, insanity, ludicrousness
Opp: sense

Idiom- locution, speech, phraseology, pattern

Idolatry- iconolatry, lionization, hero worshipping, adoration
Idyll- utopia, ideal time, pastoral, georgic
Iffy- low grade, substandard, tentative, unsettled
Ignoble- shameful, sordid, unworthy, shabby
Ignominious- embarrassing, inglorious, humiliating
Opp: glorious
Ignoramus- halfwit, bozo, dummy, numb skull
Illusory- erroneous, fallacious, delusive, sham
Opp: genuine
Imbibe- quaff, guzzle, assimilate, booze
Imbroglio- predicament, mishmash, complication, muddle
Immune- secure against, resistant
Opp: susceptible
Immure- jail, prisoner, intern, confine
Impartial- objective, unbiased, disinterested, fair
Opp: biased
Impassive- expressionless, poker faced, blank
Opp: expressive
Impeach- challenge, accuse, indict, arraign
Impeccable- flawless, unblemished, irreproachable, guiltless
Opp: sinful
Impecunious- indigent, strapped, penurious, penniless
Opp: wealthy
Impede- hamper, cumber, scupper, derail
Opp: facilitate
Impending- approaching, menacing, looming, brewing
Imperceptible- vague, inaudible, subtle, obscure
Opp: noticeable
Imperial- bossy, monarchial, grand, sovereign
Imperil- jeopardize, peril, risk, endanger
Imperious- commanding, authoritative, assertive, peremptory
Impertinence- rudeness, sassiness, cockiness, audacity
Imperturbable-composed, unflustered, placid, serene
Opp: excitable
Impervious- impenetrable, oblivious, heedless
Opp: susceptible
Impetuous- hasty, torrential, violent, precipitous
Opp: sluggish
Impiety- apostasy, sinfulness, misdeed, paganism
Opp: faith
Impinge- influence, collide, infringe, affect
Implacable- harsh, stern, remorseless, unyielding
Implausible- doubtful, inconvincible, debatable, preposterous
Opp: convincing
Implicate-incriminate, enmesh, concern, imply
Impoverished- indigent, unfertile, penurious, bankrupt
Opp: rich
Impracticable- impractical, non-viable
Opp: feasible
Imprecation- curse, malediction, obscenity, oath
Opp: blessing
Impregnate- soak, saturate, drench, fertilize
Impromptu- extempore, off the cuff, spontaneous, unscripted
Opp: rehearsed
Improvise-extemporize, contrive, knock up, impromptu
Impudent- brazen, lippy, shameless, bumptious
Opp: polite
Impugn- dispute, query
Inadequacy- deficiency, inefficacy, imperfection, limitation
Opp: abundance
Inadvertent- innocent, accidental, involuntary
Opp: deliberate
Inane- idiotic, stupid, childish, moronic
Opp: sensible
Inauspicious- ominous, bleak, disheartening
Opp: promising
Incarcerate- lockup, prison, jail
Opp: release
Incendiary- flammable, subversive, seditious
Incense- enrage, flame, madden, antagonize
Opp: please
Inception- founding, dawn, genesis, origin
Opp: end
Incessant- continuum, unbroken, non-stop, sustain
Opp: intermittent
Incipient- emergent, nascent, germinal, developing
Opp: full blown
Incombustible- retardant, fireproof, oven proof
Incognito- undercover, camouflage, secretly

Incontestable- undeniable, certain, unarguable, conclusive

Opp: questionable
Incredulous- dubious, cynical, distrustful
Incriminate- accuse, enmesh, implant, impress
Indefatigable- dodged, persistent, relentless, tenacious
Indelible- enduring, unfading, haunting, ineradicable
Indenture- bond, compact, certificate, warrant
Indict- arraign, summons, impeach, prosecute
Opp: acquit
Indigenous- original, earliest
Indignant- offended, cross, vexed, irked
Indiscreet- unwary, improper, tactless, careless
Indisposition- malady, ailment, aversion, sickness
Indolent- lazy, sluggardly, languid, torpid
Opp: energetic
Indomitable- stout hearted, valiant, intrepid, steely
Opp: submissive
Inebriated- tipsy, paralytic, ratted, soused
Opp: sober
Ineffable- unimaginable, unutterable, staggering, amazing
Inefficacious- ineffective
Inexhaustible- boundless, unfaltering, dodged, untold
Opp: wary
Inexplicable- insoluble, mystifying, bewildering, perplexing
Opp: understandable
Inextricable- indivisible, entangled
Infested- alive, plagued, swarming, teeming
ingratiate- cultivate, flatter, bootlicking
Inharmonious- conflicting, belligerent, cacophonous, tuneless
Opp: congenial
Inequity- villainy, violation, atrocity, odiousness
Opp: virtue
Innocuous- non-toxic, anodyne, tame
Opp: harmful
Innuendo- hint, aspersion, slur, implication
Insinuate- hint, insert, suggest
Insidious- stealthy, cunning, sneaky, wily
Insular- provincial, bigoted, biased, solitary
Opp: cosmopolitan
Insurmountable- invincible, insuperable, hopeless, unassailable
Intemperate- extreme, reckless, dissolute, wanton
Opp: moderate
Interdict- prohibition, embargo, suppress, intercept
Opp: permit
Intimidate- subdue, harass, bulldoze, hound
Intervene- intrude, interfere, occur, arise
Inure- habituate, accustom, toughen, adjust
Opp: sensitize
Invective- swearing, insult, contumely, expletives
Opp: praise
Inveterate- Obsessive, staunch, deep rooted, compulsive
Invidious- unenviable, detrimental, awkward
Opp: pleasant
Invincible- inviolable, impregnable
Opp: vulnerable
Iridescent- opalescent, coruscating, effulgent, lustrous
Irreligious- agnostic, pagan, barbarian, faithless
Opp: pious
Irreparable- beyond repair, irreversible
Opp: repairable
Irreproachable- untarnished, flawless, modern, exemplary
Opp: reprehensible

Word List Discussion

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5 Responses to “GRE Essential Vocabulary- List I”

1. Raj Kumar K.C on November 14th, 2009 6:00 pm

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2. AnuVeluri on November 16th, 2009 7:22 am

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3. hassan suleiman ahmad on February 11th, 2010 11:00 am

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4. AnuVeluri on February 12th, 2010 2:17 pm

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5. MD. KAWSAR HOSSAIN on October 17th, 2010 12:46 pm

   yea, that’s a really very praise worthy approach for geeting the feedback, advancement and problems too. it should be continued…

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