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
At its peak, it’s got some adrenaline-pumping lunacy that’s admirable.
—
Brian Tallerico, Vulture, 4 June 2024
This tribute to the ill-fitting celebrity guest spots on sitcoms of yore rises to incredible heights of lunacy and requires not a lick of prior knowledge about Little Richard to pull laughs from viewers.
—Joe Berkowitz, Vulture, 3 Nov. 2024
Rudolph hopes that the time is finally right for audiences to appreciate the film’s lunacy and vision of an America whose values have gone completely out of whack.
—Jim Hemphill, IndieWire, 29 Oct. 2024
Like Spann, my perception is that the volume of lunacy and hostility was greater than usual.
—Marshall Shepherd, Forbes, 12 Oct. 2024
See all Example Sentences for lunacy 
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Brian Tallerico, Vulture, 4 June 2024
This tribute to the ill-fitting celebrity guest spots on sitcoms of yore rises to incredible heights of lunacy and requires not a lick of prior knowledge about Little Richard to pull laughs from viewers.
—Joe Berkowitz, Vulture, 3 Nov. 2024
Rudolph hopes that the time is finally right for audiences to appreciate the film’s lunacy and vision of an America whose values have gone completely out of whack.
—Jim Hemphill, IndieWire, 29 Oct. 2024
Like Spann, my perception is that the volume of lunacy and hostility was greater than usual.
—Marshall Shepherd, Forbes, 12 Oct. 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 30 Dec. 2024.
Copy CitationKids Definition
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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share