Definition of Foolishness

Noun: foolishness  foo-lish-nus

  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

See also:
foolishly
foolishnesses