be stupid
He is stupid to believe that.
他相信那个真是愚蠢。
愚蠢的；笨的
stupider — comparative of stupid
恍惚的；呆若木鸡的；没有智力；达到昏迷的程度；缺乏或表现出缺乏智力敏锐；尤其因震惊而处于精神麻木状态
lacking intelligence or common sense
没有智力
Without intelligence.
达到昏迷的程度
To the point of stupor.
缺乏或表现出缺乏智力敏锐
lacking or marked by lack of intellectual acuity
尤其因震惊而处于精神麻木状态
in a state of mental numbness especially as resulting from shock
I felt stupid when I realized I had locked my keys in the car.
当我意识到把钥匙锁在车里时，我觉得自己很笨。
用法提示：stupid 作形容词，在句中作 felt 的表语，表示“愚蠢的、笨的”。
AI contextual example
It was stupid of me to leave the window open last night.
我昨晚没关窗户，真是太蠢了。
用法提示：stupid 作形容词，用在 It was stupid of... 结构中，评价某人的行为愚蠢。
AI contextual example
He made a stupid mistake on the math test.
他在数学考试中犯了一个愚蠢的错误。
用法提示：stupid 作形容词，放在名词 mistake 前作定语，表示“愚蠢的”。
AI contextual example
He is stupid to believe that.
他相信那个真是愚蠢。
常用结构，强调行为愚蠢
It was stupid of you to leave the door open.
你让门开着真是太傻了。
Don't ask such stupid questions.
别问这么愚蠢的问题。
与stupid意思相近，但更强调缺乏判断力或智慧。
非正式用语，比stupid语气稍弱。
语气较强，带有贬义。
强调理解力差，常用于口语。
侧重于缺乏能力，不完全是愚蠢。在部分语境下可替换。
grammar · medium
易错句子He is stupidity.
正确表达He is stupid.
stupidity是名词，表示'愚蠢'；而此处需要形容词stupid来描述人。应使用形容词作为表语。
grammar · medium
易错句子That was a stupidly idea.
正确表达That was a stupid idea.
stupidly是副词，不能修饰名词idea；应使用形容词stupid修饰名词。
grammar · medium
易错句子It's stupid for you to do that.
正确表达It's stupid of you to do that.
在句型'It's stupid of sb to do sth'中，介词固定用of，表示某人的行为愚蠢，而不用for。
相对于“愚蠢的”，指智力高、反应快。
相对于“愚蠢的”，指有智慧、理解力强。
相对于“愚蠢的”，指头脑灵活、善于思考。
相对于“愚蠢的”，指领悟力高、学得快。
相对于“愚蠢的”，指思维敏捷、洞察力强。
dumb 侧重因缺乏智力或表达能力而显得愚蠢，有时含贬义；stupid 更强调智力低下或判断力差。
foolish 指因缺乏常识或判断力而做出的傻事，语气较温和；stupid 更直接贬低智力。
silly 指行为幼稚、可笑，含轻微贬义；stupid 语气更强，指智力低下。
愚蠢的错误
I made a stupid mistake on the test.
我在考试中犯了一个愚蠢的错误。
愚蠢的问题
There's no such thing as a stupid question.
没有所谓愚蠢的问题。
愚蠢的主意
That's a stupid idea; it will never work.
那是个愚蠢的主意，行不通的。
愚蠢的事
Don't do stupid things when you're angry.
生气时别做愚蠢的事。
愚蠢的人
He's not a stupid person, just lazy.
他不是愚蠢的人，只是懒。
愚蠢的决定
Quitting your job was a stupid decision.
辞掉工作是个愚蠢的决定。
与stupid相对的概念，常用于讨论认知能力。
愚蠢的行为常导致错误，两者在语境中经常关联。
从愚蠢行为中吸取教训，是常见的话题关联。
缺乏判断力常被描述为stupid，两者语义相关。
愚蠢的行为决定愚蠢的人
He keeps making the same mistakes. Stupid is as stupid does.
他一直在犯同样的错误。愚蠢的行为决定愚蠢的人。
装傻
Don't play stupid with me; you know what I'm talking about.
别跟我装傻，你知道我在说什么。
大清早/深更半夜（非常早或非常晚的时间）
We have to wake up at stupid o'clock to catch the flight.
我们得在大清早起床去赶飞机。
傻人有傻福。
When Forrest says 'Stupid is as stupid does,' he means actions define a person, not labels.
当阿甘说'傻人有傻福'时，他意思是行为定义一个人，而不是标签。
愚蠢的性感弗兰德斯！
Homer Simpson mutters 'Stupid sexy Flanders' out of jealousy whenever he sees his neighbor doing something well.
每当荷马·辛普森看到邻居做得很好时，他会嫉妒地嘀咕'愚蠢的性感弗兰德斯'。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY, WORDNET.