a.

1. 发疯的，发狂的
   She went mad after the death of her son.

   儿子死后她就疯了。

2. 疯狂的，狂热的[（+with）]
3. 愚蠢的；鲁莽的
   It was a mad idea to climb the mountain in this bad weather.

   在这种坏天气去爬山真是愚蠢。

4. 【口】狂热的，着迷的[F][（+about/on/for）]
   Both brothers are mad about tennis.

   兄弟俩对网球都很入迷。

5. 【口】恼火的[F][（+at/with）]
   Don't be mad at me.

   不要对我大发脾气。

vt.

1. 【罕】使发狂；激怒

vi.

1. 【罕】发狂；发怒

n.

1. 狂怒[U]

adj.

1. mentally ill; insane.
   ▸extremely foolish or ill-advised.
   ▸(of a dog) rabid.
2. informal frenzied; frantic.
3. informal very enthusiastic about something: [in combination]
   he's football-mad.
4. informal very angry.

v.