lunacy

play
noun lu·na·cy \ ˈlü-nə-sē \

Definition of lunacy

plural lunacies
1 dated
a :insanity 1
b :intermittent insanity once believed to be related to phases of the moon
2 :wild foolishness :extravagant folly
3 :a foolish act

Examples of lunacy in a Sentence

  1. Quitting her job was lunacy.

  2. His idea was considered total lunacy.

Recent Examples of lunacy from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'lunacy.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of lunacy

lunatic


Medical Dictionary

lunacy

play
noun lu·na·cy \ ˈlü-nə-sē \

medical Definition of lunacy

plural lunacies
dated
:mental illness; also :intermittent mental illness once believed to be related to phases of the moon

Law Dictionary

lunacy

play
noun lu·na·cy \ ˈlü-nə-sē \

legal Definition of lunacy



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