lunacy

noun

lu·​na·​cy ˈlü-nə-sē How to pronounce lunacy (audio)
plural lunacies
1
dated
b
: intermittent insanity once believed to be related to phases of the moon
2
: wild foolishness : extravagant folly
3
: a foolish act

Example Sentences

Quitting her job was lunacy. His idea was considered total lunacy.
Recent Examples on the Web Caught between Democratic fecklessness and Republican lunacy, voters delivered a stalemate—not a vote of confidence, but a repudiation of sorts for both parties. Molly Ball, Time, 9 Nov. 2022 While, yes, this could be the plot of any high-octane extravaganza from the '80s and '90s, the sheer lunacy of this script makes this one of the most enjoyable entries in Stallone's action hero career. Andrew Walsh, EW.com, 8 Nov. 2022 Adopting a low, gravelly voice that enhances the character’s odd gravitas, Mr. Boyega imbues Brown-Easley with determination and dignity but also a layer of lunacy and paranoia. Kyle Smith, WSJ, 25 Aug. 2022 But the personal reality underlying the lunacy is as solid as Texas itself. Ed Stockly, Los Angeles Times, 24 Aug. 2022 Carrey reminds us why his '60s-film-villain lunacy is the best thing to ever happen to the Dr. Robotnik character. Sam Machkovech, Ars Technica, 6 Apr. 2022 But the screwball antics work with credit to Playhouse director David Arisco, who finds the balance between Ludwig’s lunacy and Christie’s suspense. Michelle F. Solomon, Sun Sentinel, 25 May 2022 In this action adventure, the apotheosis of his career thus far, cheerful idiocy occasionally rises to the level of delectable lunacy. Joe Morgenstern, WSJ, 8 Apr. 2022 But Kraje even charms while observing from afar, delighting in the lunacy of others while perched on the crescent moon in the glowing woodland set of scenic designer Anastasia Rurikov Simes. Thomas Floyd, Washington Post, 4 July 2022 See More

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.

Word History

Etymology

lunatic

First Known Use

1541, in the meaning defined at sense 1a

Time Traveler
The first known use of lunacy was in 1541

Dictionary Entries Near lunacy

Cite this Entry

“Lunacy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lunacy. Accessed 2 Dec. 2022.

Kids Definition

lunacy

noun

lu·​na·​cy ˈlü-nə-sē How to pronounce lunacy (audio)
plural lunacies
: insanity sense 1
used chiefly in the past

Medical Definition

lunacy

noun

lu·​na·​cy ˈlü-nə-sē How to pronounce lunacy (audio)
plural lunacies
dated
: mental illness
also : intermittent mental illness once believed to be related to phases of the moon

Legal Definition

lunacy

noun

lu·​na·​cy ˈlü-nə-sē How to pronounce lunacy (audio)

More from Merriam-Webster on lunacy

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