n.轻率粗心的人；冒失鬼

He committed an astonishing blunder. 他犯了一个惊人的错误。

I made a terrible blunder in introducing her to my husband. 我把她介绍给我的丈夫是犯了一个极大的错误。

His blunder would certainly queer his chances of promotion. 他犯的大错肯定会毁了他晋升的机会。

John is a bit of a dangerous blunderer. 约翰是一个很危险而且经常坏事的人。

His carelessness results in a serious blunder. 他的粗枝大叶导致他犯了一个严重错误。

History will ever throw this blunder in his teeth. 历史将永远谴责他的这一错误。