stupid silly foolish三个单词有什么区别？

从语气上来说stupid>foolish>silly

stupid——缺乏正常理解力，智力（天生的） 说明蠢，贬义
eg.Don't be stupid enough to believe that

foolish——缺乏常识
eg. How foolish of her to spend so much time on it

silly——无知的，可笑的
eg.Don't ask your father so many silly questions.

silly 是比较开玩笑的 语气不强
但stupid foolish 语气较强 带有侮辱性（慎用）

就是常用和不常用的区别 意思不大~~