Definition of lunacy
lunacies
1 dated a : insanity 1b : intermittent insanity once believed to be related to phases of the moon
2 : wild foolishness : extravagant folly
3 : a foolish act
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Examples of lunacy in a Sentence
Quitting her job was lunacy.
His idea was considered total lunacy.
Recent Examples of lunacy from the Web
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Which means Democrats either have to figure a way to defuse it or—gasp!—Illinois is looking at another four years of this lunacy.
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First, pundits can dispel the notion that Ivanka Trump and Jared Kushner have the secret sauce for pacifying Trump and keeping him from descending into right-wing lunacy.
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The fruit of the lunacy starts with George and Harold (voiced with great childish glee by Kevin Hart and Thomas Middleditch), two elementary school buddies who spend more time pulling pranks than studying.
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The typical Sebaldian character is estranged and isolate, visited by depression and menaced by lunacy, wounded into storytelling by historical trauma.
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Summer is a time for love, lunacy, ass's ears, and laughs.
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The bunkerlike storefront, on a quiet corner in a residential neighborhood, offers no indication of the unique lunacy within.
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A fey sort of person who works just as hard at her lunacies as the rest of us do trying to keep on the mundane side.
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Blame it on the current lunacy surrounding any stock that even smells like an Internet play.
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
Other Psychology Terms
Medical Dictionary
lunacy
playMedical Definition of lunacy
lunacies
dated : mental illness; also : intermittent mental illness once believed to be related to phases of the moon
Law Dictionary
Learn More about lunacy
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Thesaurus: All synonyms and antonyms for lunacy Spanish Central: Translation of lunacy Nglish: Translation of lunacy for Spanish speakers Britannica English: Translation of lunacy for Arabic speakers
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