innovation [InE5veIFEn] n. 改革,创新(the introduction of something new)
(类)contumaciou·authority=reactionary·innovation 顽固的反对权威=反动的反对革新
(同)change, mutation, novelty, permutation
inquisitive [in5kwizitiv] adj. 过分好奇的(improperly curious about the affairs of others)
(类)inquisitive·curious=painful·agonizing
好奇的·过分好奇的=疼痛的·疼痛难忍的(程度)
insensate adj. 1. 无感觉的，无生气的(lacking sensation)2. 无知觉的(unconscious)
3. 缺乏感情的(lacking sensibility)4. 缺乏理性的(lacking sense)5.愚蠢的
(记)由这个词可体会sense的派生词不同的用法。这些词词义互相重叠又有差异，
关键是要结合他们的考法来记，如下面的insensible，8个词义仅考到其中一个。
Insensible adj. 无知觉的，麻木的(devoid of physical sensation or the power to react, as to pain
or cold;numb)
(类)numb·insensible=burnish·lustrous 使麻木是使无知觉的=磨光是使有光泽的(使动)
bribe·incorruptible=affect/rouse·insensible 贿赂·清廉的=影响 / 激起·麻木的(难以)
insensitive [ in5sensitiv ] adj. 不懂事的(lacking feeling or tact);麻木的(numb)
(类)obstinate·persevre=tactless/insensitive·offend
固执的·坚持=不老练的/不懂事的·冒犯(个性及其结果)
insensitive·boor=mischievous·imp 不懂事的·粗人=调皮的·顽童(正面特征)
(反)insensitive ◆ tender 麻木的 ◆ 敏感的，过敏的(sensitive)
insentient adj. 无感觉的或知觉的(devoid of sensation or consciousness)
(反)insentient ◆ perceiving 无知觉的 ◆ 有知觉的
insider n. 内部人员 知情者，了解内幕的人
insight [InsaIt] n. 洞察力(the capacity to discern the true nature of a situation;penetration)
(类)insight· discern=mettle· endure 洞察力·洞悉=毅力·忍耐 (正面特征)
【注】mettle ：staying quality :stamina毅力，持久力(还有勇气的意思)
insight· discerning=deadpan·impassive 洞察力·洞悉=无表情·消极(正面特征)
insinuate vt. 暗示，使潜入
(例)insinuate oneself into the crowd 逐渐地挤进人群
(记)sinu弯曲→曲折进入→潜入 参考：sinuous adj. 蜿蜒的, 错综复杂的
insipid [In5sIpId] adj. 平淡的(lacking in qualities that interest, stimulate);难吃的
(类)insipid·invention=prosaic·imagination 平淡的·创造=平淡的·想象力(缺乏关系)
(反)insipid ◆ piquant 难吃的 ◆ 开胃的
(记)in sip(吸吮) id →没法吸(吃)的→平淡，难吃的
(同)vapid, flat, jejune, banal, inane ,arid, tedious, uninteresting
(例)an insipid romance with platitudes on every page
insolent [5InsElEnt] adj. 粗野的，无礼的(exhibiting boldness or effrontery)
(反)insolent ◆ polite/courteous 无礼的 ◆ 有礼貌的
insolent ◆ respectful 粗野的 ◆ 恭敬的，有礼貌的
(例)an insolent child with no respect or regard for anyone
insouciant [In5su:sIEnt] adj. 无忧无虑的(lighthearted unconcern)
(类)tenacious·yield=insouciant·worry 不屈不挠的·屈服=无忧无虑的·担忧
(同)carefree, lighthearted, lightsome
(记)in souci(= solicit恳求) ant→万事不求人→无忧无虑的
inspired a.吸入的;得到灵感的，有灵感的;被人授意的，被鼓动的
(例)inspired poem有感而作的诗;inspired views体现别人意志的意见
instate [In`steIt] vt. 任命(to set or establish in a rank or office)
(反)instate ◆ oust 任命 ◆ 剥夺
(记)in(进入) state(政府)进入政府任职→任命
(同)inaugurate, induct, install, invest
instigate [5InstI^eIt] vt. 教唆，怂恿，煽动(to goad or urge forward)
(类)instigator·incite=bully·browbeat 煽动者· 煽动=欺凌弱小者·欺凌(人物及其动作)
(反)quell ◆ foment/ instigate/ rouse 镇压 ◆ 煽动/ 教唆 /煽动
(同)abet, foment, provoke
instill [In5stIl] v. 滴注，慢慢地灌输(to impart gradually)
(反)instill ◆ drain away 慢慢地灌输 ◆ 渐渐枯竭
instill ◆ remove 慢慢地灌输 ◆ 移开
(记)in(进入) still=(drop 滴)→一滴一滴的进入 参考：distill 蒸馏
(同)inculcate, infix, inseminate
instinct [ 5instiNkt ] n. 本能，天性直觉(a natural aptitude, impulse, or capacity)
institute [5InstEtu:t] n. 学院 vt. 创立，开始，制定(to originate and get established)
(反)institute ◆ abrogate / rescind / efface 创立 ◆ 废除
(记)最著名的是MIT(Massachusetts Institute of Technology)
(同)constitute, create, establish, organize
instrumentalist [InstrE5mentElIst] n. 乐器演奏家
(类)instrumentalist·orchestra=actor·troupe 乐器演奏家·管弦乐队=演员·剧团
instrumentalist·symphony=dancer·ballet 乐器演奏家·交响乐=舞蹈家·芭蕾舞
(记)instrumenta list
insubordinate [InsE5bC:dInEt] adj.不服从的，反抗的(disobedient to authority)
(类)insubordinate·submissive=capricious·deliberate不顺从的·顺从的=易冲动的·深思熟虑的
【注】capricious：characterized by or subject to whim;impulsive and unpredictable
(反)tractable ◆ insubordinate/ intransigent/ incorrigible/ obstinate
易于管教的 ◆ 反抗的/ 不妥协的/ 顽固的/ 倔强的
(同)contumacious, insurgent, rebellious, seditious
(记)in(不) subordinate(服从)不服从的→反抗的
insular [5InsElEr] adj. 岛的，孤立的，岛特有的
(反)insular ◆ cosmopolitan 孤立的 ◆ 世界性的
