be foolish to do sth
He was foolish to trust her.
他信任她真是太蠢了。
不明智的；愚蠢的；傻瓜似的；傻里傻气的；缺乏理智或判断力的；愚蠢的；显露愚昧的
Lacking good sense or judgement; stupid or unwise.
Lacking good sense or judgement as a general trait; unwise; stupid.
缺乏理智或判断力的
devoid of good sense or judgment
Not based on good sense or judgement; as a fool would do or conclude.
愚蠢的；显露愚昧的
having or revealing stupidity
Resembling or characteristic of a fool.
It was foolish of him to spend all his savings on lottery tickets.
他把所有积蓄都花在彩票上，真是太愚蠢了。
用法提示：形容词作表语，描述行为不理智
AI contextual example
Don't be foolish — always check the weather before a hike.
别犯傻——徒步前一定要查看天气。
用法提示：形容词作表语，用于劝诫
AI contextual example
She felt foolish for believing his lies.
她因为相信了他的谎言而感到愚蠢。
用法提示：形容词作表语，描述感到尴尬或自责
AI contextual example
He was foolish to trust her.
他信任她真是太蠢了。
It was foolish of me to forget the appointment.
我忘了约会真是太傻了。
She was foolish enough to believe his lies.
她竟愚蠢到相信他的谎言。
It would be foolish to ignore the warning.
忽视警告将是愚蠢的。
比foolish更口语化，程度较弱
更正式，强调判断失误
强调不合逻辑，比foolish程度强
非常不礼貌，强烈贬义
强调滑稽可笑，与foolish略有不同
grammar · medium
易错句子She looks foolishly.
正确表达She looks foolish.
“look”是系动词，后应接形容词作表语，而非副词“foolishly”。
grammar · medium
易错句子It is foolish for you to go alone.
正确表达It is foolish of you to go alone.
表示“某人做某事是愚蠢的”，固定搭配为“it is foolish of someone to do something”，介词用“of”而非“for”。
对应 foolish“愚蠢的、缺乏判断力”之义；最直接的反义词，强调判断和经验带来的明智。
对应 foolish“不切实际、不明智”之义；侧重常识和实用判断，但语气较温和。
对应 foolish“轻率、不顾后果”之义；强调顾全后果的谨慎，不完全覆盖“傻、笨”的语感。
silly 侧重指言行幼稚可笑，缺乏判断力；foolish 更强调愚蠢、不明智。
unwise 强调决策或行为缺乏远见和谨慎；foolish 则泛指愚蠢。
愚蠢的错误
It was a foolish mistake to trust him.
信任他是一个愚蠢的错误。
不明智的决定
She regretted her foolish decision to quit school.
她后悔辍学这个不明智的决定。
愚蠢的行为
His foolish behavior at the party embarrassed everyone.
他在聚会上的愚蠢行为让所有人都很尴尬。
愚蠢的想法
Don't listen to him; that's a foolish idea.
别听他的，那是个愚蠢的想法。
愚蠢的自尊心
His foolish pride prevented him from apologizing.
他愚蠢的自尊心阻止了他道歉。
愚蠢的问题
There's no such thing as a foolish question.
没有愚蠢的问题这回事。
root: fool (傻瓜); suffix: -ish (...的); related: foolishly, foolishness; same suffix: childish, stylish; same root: fool, foolishness
小处精明，大处糊涂
He saved money by using cheap materials, but the building collapsed: penny wise and pound foolish.
他用廉价材料省钱，但楼塌了：真是小处精明，大处糊涂。
愚蠢的一贯性
The manager insisted on the same old methods despite better alternatives; that's foolish consistency.
经理尽管有更好的方法却坚持老一套，这就是愚蠢的一贯性。
愚蠢的自尊心
He refused to apologize out of foolish pride, which ruined their friendship.
他出于愚蠢的自尊心拒绝道歉，毁了他们的友谊。
愚蠢地前后一致是心智狭隘的妖怪。
From Ralph Waldo Emerson's essay 'Self-Reliance'.
出自拉尔夫·沃尔多·爱默生的散文《论自助》。
发长 /uː/ 音 (如 food, boot)
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.
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