Lunacy meaning

lo͝onə-sē
Frequency:
Something deeply misguided.
noun
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The definition of lunacy is the state of being insane or wild foolishness.

An example of lunacy is college students and intense partying over Spring break.

noun
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(of a person or group of people) The state of being mad, insanity.
  • A cyclical mental disease, apparently linked to the lunar phases.
  • Insanity implying legal irresponsibility.
noun
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Great folly or a foolish act.
noun
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Origin of lunacy

  • From lunatic

    From American Heritage Dictionary of the English Language, 5th Edition

  • From lunatic + -cy.

    From Wiktionary