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
Synonyms
Examples of lunacy in a Sentence
Quitting her job was lunacy.
His idea was considered total lunacy.
Recent Examples on the Web
The sheer quantity of extremist marketing lunacy churned out by Old State Saloon in Eagle is astonishing.
—
Michael Deeds, Idaho Statesman, 10 Jan. 2025
While the Aggies’ deals for Fisher set new bars for contract lunacy, Sarkisian’s new deal is in line with the current market for a coach of his caliber.
—Blake Toppmeyer, The Tennessean, 20 Dec. 2024
In others, such as the United States, even calm periods were punctuated by moments of lunacy, such as the witch-hunts of the McCarthy era or President Richard Nixon’s blatant disregard for the rules of the democratic game.
—Yascha Mounk, Foreign Affairs, 18 Aug. 2014
At its peak, it’s got some adrenaline-pumping lunacy that’s admirable.
—Brian Tallerico, Vulture, 4 June 2024
See all Example Sentences for lunacy 
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Michael Deeds, Idaho Statesman, 10 Jan. 2025
While the Aggies’ deals for Fisher set new bars for contract lunacy, Sarkisian’s new deal is in line with the current market for a coach of his caliber.
—Blake Toppmeyer, The Tennessean, 20 Dec. 2024
In others, such as the United States, even calm periods were punctuated by moments of lunacy, such as the witch-hunts of the McCarthy era or President Richard Nixon’s blatant disregard for the rules of the democratic game.
—Yascha Mounk, Foreign Affairs, 18 Aug. 2014
At its peak, it’s got some adrenaline-pumping lunacy that’s admirable.
—Brian Tallerico, Vulture, 4 June 2024
See all Example Sentences for lunacy
Dictionary Entries Near lunacy
Cite this Entry
“Lunacy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lunacy. Accessed 23 Jan. 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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