interminable
无尽头的：no end
intermittent
间歇的，断断续续的：not continuous；不定期的：lacking regularity
interregnum
过渡期：break
interrogate
质问，审问：question formally
intimate
有紧密联系的，亲密无间的：close association；不为人知的：not known；密友：person who has a strong liking；迂回地交流，间接地沟通：communicate indirectly
intimidate
威吓：frighten
intoxicant
使人陶醉的东西（尤指酒精饮料）：intoxicates
intransigent
不妥协的，固执的：refusal to compromise
intrepid
无谓的：resolute fearlessness
intrigue
阴谋：a secret plan；激起...的兴趣：arouse curiosity
intrinsic
固有的，内在的：essential
intuitive
直觉的：by intuition
inundate
淹没：cover with flood
inure
使习惯接受不好的东西：accustom；使坚强：withstand physical hardship
invective
侮辱性的：characterized by insult
inveigh
激烈抗议，表示强烈不满：protest vehemently
inveigle
诱骗：win over by coaxing
inventory
存货清单：list all goods；（包含要点的）简介：short statement
inveterate
积习的：firmly established
invidious
惹人反感的：cause discontent；羡慕嫉妒恨的：resentment of another's possessions
invigorate
使精神，使强壮，鼓舞激励：impart vigor
invincible
不可战胜的，不可超越的：incapable conquered
invoke
实施：put into effect；产生，造成：be the cause
irascible
易怒的：easily provoked anger
irate
极其愤怒的：extremely angry
iridescent
五颜六色的：lustrous colors
irk
令人烦恼的事物：source of irritation；使烦恼，使厌倦：irritating
ironclad
非常坚固的，坚不可摧的：unbreakable
irradicable
不能根除的：impossible destroy
irreducible
（数）不可约分的：incapable factored
irrigate
灌溉：supply water；冲洗：flush
irritate
刺激，惹恼：provoke anger
issue
（有争议的）话题，议题：matter that is in dispute；发布（期刊）等：produce and release；（使）流出：flow out
jabber
快而不清楚地说：talk rapidly, indistinctly
jaded
疲惫的：depleted in strength；厌倦的，没兴趣没热情的：patience exhausted
jape
嘲弄：mockingly
jargon
行业术语：specialized or technical language
jarring
刺耳的：discordant；震惊的：strong emotional reaction
jaundice
（因嫉妒或厌世而产生的）偏见：bias
jaunty
轻快呃，活泼的：sprightly
jejune
无趣乏味的：not interesting；幼稚的：annoying qualities children
jettison
丢弃，投弃：cast
jeopardy
危险： risk, danger
jest
轻浮的态度，戏谑：frivolous
jibe
意见一致：agree
jingoist
极端爱国激进分子（通常表现为好战的对外政策）：extreme nationalism belligerent
jitters
紧张，不安：panic, nervousness
jocular
搞笑的，欢乐的：joking, playful
jocund
欢快的，高兴的：sprightly lighthearted
jog
慢跑：movement exercise；唤起：rouse
jolt
突然移动：move sudden；惊吓：unpleasant surprise
jot
简要记录：write briefly
jovial
愉快的：good-mannered, jollity, conviviality
jubilant
喜悦的：joyful
judicious
明智的，慎重的：judgment prudent
juggernaut
无法阻挡的力量的，摧毁一切的强大力量：overwhelming force
ken
视野范围：vision；知道，了解（人或物）：know
kidnap
绑架勒索：detain unlawful force
kindle
点燃：set fire, ignite
kindred
类似的；具有相似或相近的起源、本性或性质的：similar origin
knack
诀窍，聪明的做法：clever
knead
揉捏，塑造：shape by folding
knit
编织（纱线）：interlacing yarn with needles；连接，联系：join closely
knotty
多结的，复杂的，困难的：full of difficulties complications
kudos
名望，名声：fame；夸奖，赞扬：acclaim or praise
labile
易变的，不稳定的：unstable
laborious
勤奋的：industrious；费力的：long, hard work
labyrinthine
迷宫似的，复杂曲折的：extremely complex structure
lacerate
使非常痛苦：cause pain
lackluster
黯淡无光泽的：lacking brightness
laconic
简洁（以至于显得粗鲁或难以理解的）：minimum of words, concise
lachrymose
催人泪下的，悲伤的：mournful
lambaste
严厉斥责：scold sharply
lament
悼词：composition grief；抱怨：resentment；为...哀悼，表达痛苦或遗憾：express sorrow
lamentable
值得惋惜的，悲哀的：deplorable
lampoon
讽刺：harsh satire
languid
没精打采的，虚弱的：lacking energy
languish
变得衰弱：become feeble
languor
懒惰：inertness；衰弱：weakness, weariness
lank
细长瘦弱的：long lean；不僵硬的，柔软松弛的：limp, not stiff
lapse
小过失：slight error；结束，终止：end
largesse
捐赠物：without expectation of a return；慷慨：liberality
lash
击打：hard strike；猛击，撞击：strike with force；捆扎：bind
lassitude
乏力，没精打采：diminished energy
latent
潜在的，不活跃的：potential, not evident
latitude
（行动或言论）自由：freedom
laudatory
表示赞扬的：praise
lavish
奢侈的，大量的，无节制的：extravagance and profusion；挥霍，浪费：give readily carelessly
leaven
在...中加入轻松、活泼或变更的因素：mingle permeate
leer
一瞥，斜眼看：sidelong
leery
怀疑的，不信任的：suspicious
legacy
遗产：handed down ancestor
legend
传奇，传说：popular myth；图例：explanatory list map
legion
大量的人，（尤指）军团：large body of men；大量的：numerous
lenient
宽大仁慈的：merciful
lethal
非常有害的，致命的：extremely harmful
lethargic
没精打采的，行动迟缓的：sluggish
levelheaded
明智的：sensible
levity
轻浮：frivolity
liability
责任：liable；障碍，不利条件：creates difficulty