a man who is mentally ill 疯子,精神失常者 ■an extremely foolish or reckless person 愚蠢的人;鲁莽的人 car got out of control—some madman going too fast. 小汽车失去了控制——那疯子开得太快了。 ■used in similes to refer to a person who does something very fast, intensely, or violently (明喻)疯子 I was working like a madman. 我像疯子一样干活。