[syn: folly, foolery, tomfoolery, craziness, lunacy, indulgence]
The Collaborative International Dictionary of English v.0.48:
Craziness \Cra"zi*ness\, n.
   1. The state of being broken down or weakened; as, the
      craziness of a ship, or of the limbs.
      [1913 Webster]
   2. The state of being broken in mind; imbecility or weakness
      of intellect; derangement.
      [1913 Webster]
WordNet (r) 3.0 (2006):
craziness
    n 1: informal terms for insanity [syn: craziness, daftness,
         flakiness]
    2: the quality of being rash and foolish; "trying to drive
       through a blizzard is the height of folly"; "adjusting to an
       insane society is total foolishness" [syn: folly,
       foolishness, craziness, madness]
    3: foolish or senseless behavior [syn: folly, foolery,
       tomfoolery, craziness, lunacy, indulgence]