WordWeb Online

1. Informal term for insanity
   - daftness, flakiness
    
2. The quality of being rash and foolish
   "trying to drive through a blizzard is the height of craziness"
   - folly, foolishness, madness, nuttiness
    
3. Foolish or senseless behaviour
   - folly, foolery, tomfoolery, lunacy, indulgence

Derived forms: crazinesses

See also: crazy

Type of: caper, frolic, gambol, insanity, play, romp, stupidity