下面为大家整理的是以字母I开头的SAT考试中常出现的难度大的词汇。掌握一定的SAT词汇是备考SAT考试的首要前提。所以，各位考生一定要多加重视词汇的积累，预祝各位考生考试成功。

iconoclast

(n.) one who attacks common beliefs or institutions (jane goes to one protest after another, but she seems to be an iconoclast rather than an activist with a progressive agenda.)

ignominious

(adj.) humiliating, disgracing (it was really ignominious to be kicked out of the dorm for having an illegal gas stove in my room.)

impassive

(adj.) stoic, not susceptible to suffering (stop being so impassive; it’s healthy to cry every now and then.)

imperious

(adj.) commanding, domineering (the imperious nature of your manner led me to dislike you at once.)

impertinent

(adj.) rude, insolent (most of your comments are so impertinent that i don’t wish to dignify them with an answer.)

impervious

(adj.) impenetrable, incapable of being affected (because of their thick layer of fur, many seals are almost impervious to the cold.)

impetuous

(adj.) rash; hastily done (hilda’s hasty slaying of the king was an impetuous, thoughtless action.)

impinge

1. (v.) to impact, affect, make an impression (the hail impinged the roof, leaving large dents.)

2. (v.) to encroach, infringe (i apologize for impinging upon you like this, but i really need to use your bathroom. now.)

implacable

(adj.) incapable of being appeased or mitigated (watch out: once you shun grandma’s cooking, she is totally implacable.)

impudent

(adj.) casually rude, insolent, impertinent (the impudent young man looked the princess up and down and told her she was hot even though she hadn’t asked him.)

inchoate

(adj.) unformed or formless, in a beginning stage (the country’s government is still inchoate and, because it has no great tradition, quite unstable.)

incontrovertible

(adj.) indisputable (only stubborn tina would attempt to disprove the incontrovertible laws of physics.)

indefatigable

(adj.) incapable of defeat, failure, decay (even after traveling 62 miles, the indefatigable runner kept on moving.)

ineffable

(adj.) unspeakable, incapable of being expressed through words (it is said that the experience of playing with a dolphin is ineffable and can only be understood through direct encounter.)

inexorable

(adj.) incapable of being persuaded or placated (although i begged for hours, mom was inexorable and refused to let me stay out all night after the prom.)

ingenuous

(adj.) not devious; innocent and candid (he must have writers, but his speeches seem so ingenuous it’s hard to believe he’s not speaking from his own heart.)

inimical

(adj.) hostile (i don’t see how i could ever work for a company that was so cold and inimical to me during my interviews.)

iniquity

(n.) wickedness or sin (“your iniquity,” said the priest to the practical jokester, “will be forgiven.”)

insidious

(adj.) appealing but imperceptibly harmful, seductive (lisa’s insidious chocolate cake tastes so good but makes you feel so sick later on!)

intransigent

(adj.) refusing to compromise, often on an extreme opinion (the intransigent child said he would have 12 scoops of ice cream or he would bang his head against the wall until his mother fainted from fear.)

inure

(v.) to cause someone or something to become accustomed to a situation (twenty years in the salt mines inured the man to the discomforts of dirt and grime.)

invective

(n.) an angry verbal attack (my mother’s irrational invective against the way i dress only made me decide to dye my hair green.)

inveterate

(adj.) stubbornly established by habit (i’m the first to admit that i’m an inveterate coffee drinker—i drink four cups a day.)

以上就是关于SAT考试超难词汇总结的全面内容，是以I开头的。各位考生可以作为备考SAT考试时的参考资料，希望对各位考生的SAT考试有所帮助。

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