plural lunacies
1
dated
a
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
Quitting her job was lunacy.
His idea was considered total lunacy.
Recent Examples on the Web
How can Republicans in the Senate and Congress aid and abet this lunacy?
—
Sun Sentinel Editorial Board, Sun Sentinel, 6 Apr. 2025
Goggins is simply incredible, fully committed to Baby Billy’s comic lunacy yet never losing sight of his recovering sinner’s withered heart.
—Ben Travers, IndieWire, 9 Mar. 2025
The public wants the economy humming, the border secure, and an end to woke lunacy — not tariffs and irrelevant indulgences.
—Charles C. W. Cooke, National Review, 11 Mar. 2025
To suggest that anyone who vaccinates their kids doesn’t love them is a whole new level of lunacy.
—Dr. Sanjay Gupta, CNN, 29 Jan. 2025
See All Example Sentences for lunacy
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Sun Sentinel Editorial Board, Sun Sentinel, 6 Apr. 2025
Goggins is simply incredible, fully committed to Baby Billy’s comic lunacy yet never losing sight of his recovering sinner’s withered heart.
—Ben Travers, IndieWire, 9 Mar. 2025
The public wants the economy humming, the border secure, and an end to woke lunacy — not tariffs and irrelevant indulgences.
—Charles C. W. Cooke, National Review, 11 Mar. 2025
To suggest that anyone who vaccinates their kids doesn’t love them is a whole new level of lunacy.
—Dr. Sanjay Gupta, CNN, 29 Jan. 2025
See All Example Sentences for lunacy
Cite this Entry
“Lunacy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lunacy. Accessed 23 Apr. 2025.
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Medical Definition
lunacy
noun
lu·na·cy
ˈlü-nə-sē 
plural lunacies
dated
: mental illness
also
: intermittent mental illness once believed to be related to phases of the moon
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