Lunacy (noun) Definition, Meaning & Examples

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noun, plural lu·na·cies.
  1. insanity; mental disorder.
  2. intermittent insanity, formerly believed to be related to phases of the moon.
  3. extreme foolishness or an instance of it: Her decision to resign was sheer lunacy.
  4. unsoundness of mind sufficient to incapacitate one for civil transactions: a former legal term.
noun plural -cies
  1. (formerly) any severe mental illness
  2. foolishness or a foolish act
Lunacy (noun) Definition, Meaning & Examples

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