invincible [in5vinsEbl] adj. 不能征服的,无敌的(incapable of being overcome or defeated;

unconquerable)

(类)invincible·conquer=negligible·perceive 不能征服的不易被征服=可以忽略的不易被察觉

invincible·subdue=impervious·damage 不能征服的·征服=不会受到损伤的·损坏

(同)impregnable, inconquerable, indomitable, invulnerable, unassailable, undefeatable

(例)the team proved to be invincible 这个团队被证明是无法战胜的

inviting adj. 吸引人的

invoke [in5vEuk] vt. 恳求，调用(程序等)，实施(to put into effect or operation：implement)

(反)invoke ◆ suspend 实施 ◆ 暂停

irascible [i5rAsibl] adj. 易发怒的(marked by hot temper and easily provoked anger)

(类)irascible·placate=insensate·conscious 易怒的难以安抚=没感觉难以察觉

(反)affable ◆ irascible 和蔼的 ◆ 易怒的

(同)choleric, cranky, hot-tempered, ireful, passionate, peppery, temperish, testy, touchy

(例)an irascible fellow and hard to get along with

irate [ai5reit] adj. 发怒的，生气的(arising from anger)

(类)gush·effusive=rage·irate 喷涌·流出的=暴怒·愤怒的(形动同义)

(同) angry, choleric, ireful, mad, wrathful

(记)i(谐音“挨”) rate(责骂)→挨责骂 联想：挨责骂时当然是发怒的 参考：berate责骂

iridescence [9iri`desEns] n. 彩虹色(a lustrous rainbowlike play of color)

(反)iridescent ◆ monochromatic 彩色 ◆ 单色

irk [E:k] v.使苦恼，厌烦(to make weary, irritated, or bored)

(类)irk·enrage=suggest·urge 使苦恼·激怒=建议·力劝(目的)

pest·irksome=expert·proficient 让人讨厌的人/事·让人讨厌的=专家·精通的(正面特征)

(反)irk ◆ make someone pleased 使不愉快 ◆ 使愉快

(同)annoy, abrade, bother, exercise, fret, gall, provoke, ruffle, vex

(记)谐音：饿渴。联想：又饿又渴，使人烦恼。

ironclad [aIEn5klAd] adj. 装铁甲的，无懈可击的(so firm or secure as to be unbreakable)

(类)ironclad·firm=jammed·full=brilliant·smart

装甲的·坚固=拥挤的·满的=才华横溢的·聪明的(程度)

(同)inflexible, constant, fixed, immovable, immutable, inalterable

(例)an ironclad case against the defendant 一项针对被告的无懈可击的诉讼

irradicable [i5rAdikEbl] adj. 不能根除的, 根深蒂固的(impossible to eradicate：deep-rooted)

(类)ineffable·description=irradicable·obliterate 不能说的·描述=不能根除的·删除(抬杠关系)

incorrigible·amend=irradicable·remove 无可救药的·改正=不能根除的·删除(抬杠关系)

(同)inveterate, confirmed, deep-rooted, deep-seated, entrenched, hard-shell, settled

irreducible [iri5dju:sEbl] adj. (数)不可约的

(反)factorable ◆ irreducible 可约的 ◆ 不可约的

irrigate [ 5iri^eit ] vt.灌溉;冲洗(伤口)(to wash out (a body wound) with water or a medicated fluid)

(类)stoke·fuel=irrigate·water 添加燃料· 燃料= 灌溉·水 (利用)

galvanize·stimulate=irrigate·flush 刺激·刺激=冲洗·冲洗(同义)

irritate [5iriteit] n. 刺激,烦恼,刺激物(to provoke impatience, anger, or displeasure in：annoy)

(类)antidote·poisoning=balm·irritation 解毒·毒=温和物质·刺激物 (名词反义)

haunt·familiar=harass·irritating 常去的地方是熟悉的=烦扰是烦人的

(反)balm ◆ irritant 温和的 ◆ 刺激的

salve ◆ irritant 药膏 ◆ 刺激物

(同)aggravate, exasperate, gall, grate, inflame, nettle, peeve, pique, provoke, rile, roil

issue [ 5isju: ] v. 使流出;排出(to cause to flow out;emit)

(反)withdraw 收回，撤回(干扰：withhold抑制)

(同)give off, give out, release, throw off, vent

isthmus [5ismes] n.地峡 (a narrow strip of land connecting two larger land areas)

(类)isthmus·land=strait·water 地峡联结陆地=海峡联结水

itinerary [ai5tinErEri] n. 旅行日记，旅行指南(a travel diary;a traveler’s guidebook)

(类)itinerary·trip=syllabus·course 旅行日记·旅行=课程提纲·课程(安排关系)

(记)itiner(词根：旅行)参考：itinerant巡回的

jabber [5dVAbE] v. 快而不清楚地说(to talk rapidly, indistinctly, or unintelligibly)

(反)jabber ◆ speak slowly 快而不清楚地说 ◆ 慢慢地说

(同)gibber, babble, chatter, gabble

jaded [5dVeidid] adj.疲惫的，过度的，厌倦的(fatigued by overwork：exhausted)

(类)overexposure·jaded=vaccination·immune

曝光过度·曝光过度的=疫苗接种·免疫的(前者造成后者)

(反)jaded ◆ keen 厌倦的 ◆ 热心的

(同)tired, fatigued, wearied, weary, worn

jape [dVeip] n. v. 嘲弄(to make mocking fun of)

(反)revere ◆ jape at 尊敬 ◆ 嘲笑

(记)谐音：雅皮。联想：雅皮很爱嘲笑别人俗气。

jargon [5dVB:^En] n. 行话(specialized or technical language of a trade, profession, similar group)

(类)vernacular·place=jargon·profession 方言·地方=行话·行业

(记)谐音：扎根。联想：扎根基层是所有行业的行话。