以下是近几年gre考试真题中经常出现和常考的形容词词汇，不单是gre考试，很多英语考试中经常考察形容词的英译英。接下来的几天，小编会按照字母开头的顺序整理一些gre考试真题常见形容词词汇，供大家复习用。
iconoclastic :: attacking cherished traditions
igneous :: produced by fire; volcanic
ignoble :: of lowly origin; unworthy
ignominious :: disgraceful
illimitable :: infinite
immaculate :: pure; spotless
imminent :: impending; near at hand
immune :: exempt
immutable :: unchangeable
impassive :: without feeling; not affected by pain
impeccable :: faultless
impecunious :: without money
impending :: nearing; approaching
impenitent :: not repentant
imperious :: domineering
impermeable :: impervious; not permitting passage through its substance
impertinent :: insolent
impervious :: not penetrable; not permitting passage through
impetuous :: violent; hasty; rash
impious :: irreverent
implacable :: incapable of being pacified
implicit :: understood but not stated
impolitic :: not wise
impregnable :: invulnerable
impromptu :: without previous preparation
improvident :: thriftless
inalienable :: not to be taken away; nontransferable
inane :: silly; senseless
inanimate :: lifeless
inarticulate :: speechless; producing indistinct speech
incarnate :: endowed with flesh; personified
incessant :: uninterrupted
inchoate :: recently begun; rudimentary; elementary
incipient :: beginning; in an early stage
incisive :: cutting; sharp
inclement :: stormy; unkind
inclusive :: tending to include all
incognito :: with identity concealed; using an assumed name
incommodious :: not spacious
incompatible :: inharmonious
inconsequential :: of trifling significance
incontrovertible :: indisputable
incorporeal :: immaterial; without a material body
incorrigible :: uncorrectable
indefatigable :: tireless
indigenous :: native
indigent :: poor
indisputable :: too certain to be disputed
indomitable :: unconquerable
indubitably :: beyond a doubt
indulgent :: humoring; yielding; lenient
ineffable :: unutterable; cannot be expressed in speech
inept :: unsuited; absurd; incompetent
inexorable :: relentless; unyielding; implacable
infallible :: unerring
infamous :: notoriously bad
infinitesimal :: very small
inflated :: enlarged with air or gas
ingenuous :: naive; young; unsophisticated
inherent :: firmly established by nature or habit
inimical :: unfriendly; hostile
iniquitous :: unjust; wicked
innate :: inborn
innocuous :: harmless
inordinate :: unrestrained; excessive
insatiable :: not easily satisfied; greedy
inscrutable :: incomprehensible; not to be discovered
insensate :: without feeling
insidious :: treacherous; stealthy; sly
insipid :: tasteless; dull
insolent :: haughty and contemptuous
insular :: like an island; narrow-minded
insuperable :: insurmountable; invincible
insurgent :: rebellious
interminable :: endless
intermittent :: periodic; on and off
intransigent :: refusing any compromise
intrepid :: fearless
intrinsic :: belonging to a thing in itself; inherent
introvert :: inclined to think more about oneself
inured :: accustomed; hardened
inverse :: opposite
inveterate :: deep-rooted; habitual
invidious :: designed to create ill will or envy
invulnerable :: incapable of injury
irascible :: irritable; easily angered
iridescent :: exhibiting rainbowlike colors
ironical :: resulting in an unexpected and contrary manner
irreconcilable :: incompatible; not able to be resolved
irrelevant :: not applicable; unrelated
irremediable :: incurable; uncorrectable
irreparable :: not able to be corrected or repaired
irreverent :: lacking proper respect GRE，全称Graduate Record Examination，中文名称为美国研究生入学考试，适用于除法律与商业外的各专业。由美国教育考试服务处(Educational Testing Service，简称ETS)主办，GRE是美国、加拿大的大学各类研究生院（除管理类学院，法学院）要求申请者所必须具备的一个考试成绩，也是教授对申请者是否授予奖学金所依据的最重要的标准。 另有，Generic Routing Encapsulation（通用路由封装）也简称GRE。
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