WordWeb Online

1. The trait of acting stupidly or rashly
   - folly, unwiseness
    
2. The quality of being rash and foolish
   "adjusting to an insane society is total foolishness"
   - folly, craziness, madness, nuttiness
    
3. A stupid mistake
   - stupidity, bêtise, folly, imbecility

Derived forms: foolishnesses

See also: foolish

Type of: error, fault, mistake, stupidity, trait

Encyclopedia: Foolishness