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Noun: lunacy  loo-nu-see
  1. Obsolete term for legal insanity
    - madness, insaneness
  2. Foolish or senseless behaviour
    - folly, foolery, tomfoolery, craziness, indulgence

Derived forms: lunacies

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

Encyclopedia: Lunacy