SAT巴朗3500词汇书是每个考友必备书籍之一。本篇给同学们带来的是来自SAT巴朗词汇书中的词汇，希望能够给到你们帮助。
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impregnable ADJ. /不受影响的;的/invulnerable. Until the development of the airplane as a military weapon, the fort was considered impregnable.
impromptu ADJ. /一时冲动的;即兴的/without previous preparation; off the cuff; on the spur of the moment. The judges were amazed that she could make such a thorough, well-supported presentation in an impromptu speech.
impropriety N. /不合适，不恰当/improperness; unsuitableness. Because of the impropriety of the punk rocker's slashed T-shirt and jeans, the management refused to admit him to the hotel's very formal dining room.
improvident ADJ. /浪费的/thriftless. He was constantly being warned to mend his improvident ways and begin to "save for a rainy day." improvidence, N.
improvise V. /临时准备;即席创作，现编/compose on the spur of the moment. She would sit at the piano and improvise for hours on themes from Bach and Handel.
imprudent ADJ. /轻率的，判断错误的/lacking caution; injudicious. It is imprudent to exercise vigorously and become overheated when you are unwell.
impudence N. /无礼;厚颜无耻/impertinence; insolence. Kissed on the cheek by a perfect stranger, Lady Catherine exclaimed, "Of all the nerve! Young man, I should have you horse-whipped for your impudence."
impugn V. /打击;挑战/dispute or contradict (often in an insulting way); challenge; gainsay. Our treasurer was furious when the finance committee's report impugned the accuracy of his financial records and recommended that he should take bonehead math.
impunity N. /免受惩罚/freedom from punishment or harm. A 98pound weakling can't attack a beachfront bully with impunity. the poor, puny guy is sure to get mashed.
inadvertently ADV. /不经意的/unintentionally; by oversight; carelessly. Judy's great fear was that she might inadvertently omit a question on the exam and mismark her whole answer sheet.
inalienable ADJ. /无可取代的;不能给与的/not to be taken away; nontransferable. The Declaration of Independence mentions the inalienable rights that all of us possess.
inane ADJ. /傻;粗心/silly; senseless. There's no point to what you're saying. Why are you bothering to make such inane remarks?
inanimate ADJ. /了无生气的，死气沉沉的/lifeless. She was asked to identify the still and inanimate body.
inarticulate ADJ. /不善于表达的;口齿不清的/speechless; producing indistinct speech. He became inarticulate with rage and uttered sounds without meaning.
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