insane

adj. 疯狂的；精神病的；极愚蠢的

中文词源

insane 精神失常的

in-,不，非，sane,心智健全的。

insane (adj.): 1550s, from Latin insanus "mad, insane; outrageous, excessive, extravagant," from in- "not" (see in- (1)) + sanus "well, healthy, sane" (see sane). Originally only of persons; of actions, from 1842. Compare lunatic; and Italian pazzo "insane," originally a euphemism, from Latin patiens "suffering." German verrückt, literally past participle of verrücken "to displace," "applied to the brain as to a clock that is 'out of order' " [Buck]. The noun meaning "insane person" is attested from 1786.

【记法】分解为：in（前缀不）＋san（三）＋e（鹅），数不清三只鹅【联想】连3只鹅都数不清楚，精神一定有问题

1. I couldn't decide whether he was incredibly brave or just insane.: 我不能判定他到底是英勇无畏还是精神失常。

2. Some people simply can't take it and they just go insane.: 一些人完全承受不了，结果就精神失常了。

3. My desire to be rich was an insane, unwholesome, oppressive desire.: 我对财富的渴望疯狂、病态，犹如心头的一块重石。