madman

n.疯子; 精神病患者

复数：madmen

牛津词典

noun

疯子；精神病患者a man who has a serious mental illness

The killing was the act of a madman.这起凶杀案是一个疯子所为。

He drove like a madman .他像疯了似的驾车飞驰。

Some madman (= stupid person) deleted all the files.不知哪个笨蛋把所有的文件都删掉了。