WordWeb Online

1. Ludicrous, foolish
   - cockamamie [N. Amer], cockamamy [N. Amer], goofy, sappy, silly, wacky, whacky
    
2. Like a clown
   "a zany sense of humour"
   - buffoonish, clownish, clownlike

1. A buffoon in one of the old comedies; imitates others for ludicrous effect
    
2. A man who is a stupid incompetent fool
   - fathead, goof, goofball [N. Amer], bozo [N. Amer], jackass, goose, cuckoo

Derived forms: zaniest, zanier, zanies

See also: foolish, humorous, humourous [Brit, Cdn, non-standard]

Type of: boofhead [Austral], buffoon, charlie [Brit], clown, droll [archaic], drongo [Austral, NZ], fool, galah [Austral], goof, goofball [N. Amer], juggins [Brit], jughead [N. Amer], mampara [S.Africa], meathead, merry andrew [archaic], moegoe [S.Africa], muggins [Brit], sap, tomfool

Encyclopedia: Zany