Collins English-English Dictionary

mad [mæd]

1. 1. adj mentally deranged; insane

2. 2. adj senseless; foolish

   a mad idea

3. 3. adj [often foll by at] [informal] angry; resentful

4. 4. adj [foll by about, on, or over; often postpositive] wildly enthusiastic (about) or fond (of)

   mad about football

   football-mad

5. 5. adj extremely excited or confused; frantic

   a mad rush

6. 6. adj temporarily overpowered by violent reactions, emotions, etc

   mad with grief

7. 7. adj unusually ferocious

   a mad buffalo

8. 8. adj afflicted with rabies

9. 9. vb [archaic] to make or become mad; act or cause to act as if mad

10. 10. vb [Etymology] Old English gemæded, past participle of gemædan to render insane; related to gemad insane, and to Old High German gimeit silly, crazy, Old Norse meitha to hurt, damage