noun (n)

• informal terms for insanity(noun.state)

  Synonym:
  daftness, flakiness
  

  source: wordnet30
• the quality of being rash and foolish(noun.cognition)

  Synonym:
  folly, foolishness, madness
  

  source: wordnet30
• foolish or senseless behavior(noun.act)

  Synonym:
  folly, foolery, indulgence, lunacy, tomfoolery
  

  source: wordnet30
• The state of being broken down or weakened; as, the craziness of a ship, or of the limbs.(noun)

  source: webster1913