variants
or less commonly looney
loonier; looniest
looniness
noun
loony
noun
plural loonies
Synonyms
- absurd
- asinine
- balmy
- brainless
- bubbleheaded
- cockeyed
- crackpot
- crazy
- cuckoo
- daffy
- daft
- dippy
- dotty
- fatuous
- featherheaded
- fool
- foolish
- half-baked
- half-witted
- harebrained
- inept
- insane
- jerky
- kooky
- kookie
- lunatic
- lunkheaded
- mad
- nonsensical
- nutty
- preposterous
- sappy
- screwball
- senseless
- silly
- simpleminded
- stupid
- tomfool
- unwise
- wacky
- whacky
- weak-minded
- witless
- zany
Examples of loony in a Sentence
Every family includes someone who's a little loony.
that's got to be the looniest idea I've ever heard
Recent Examples on the Web
The tone of Apocalypse rediscovered the fun, bloody camp of Coven, but this time with killer robots, murderous Silicon Valley nerds, and loony Satanists in the mix.
—
Brian Moylan, Vulture, 26 Apr. 2024
The choice of Offenbach’s loony comedy about a pair of starving Peruvian artists and their manipulation by a powerful philandering viceroy was the recommendation of mezzo-soprano Isabel Leonard — who sings the title role with disarming comedic chops to rival her formidable pipes.
—Michael Andor Brodeur, Washington Post, 21 Mar. 2024
As an impressionist, Carvey's style was more, well, impressionist — his gabbling, discursive George H.W. Bush spinning out further and further while remaining resolutely tethered to some measure of loony reality.
—Dennis Perkins, EW.com, 14 Dec. 2023
These people believe the world is full of bad information — biased news, out-of-touch punditry, loony conspiracy theories.
—Kevin Roose, New York Times, 8 Oct. 2023
See all Example Sentences for loony 
Brian Moylan, Vulture, 26 Apr. 2024
The choice of Offenbach’s loony comedy about a pair of starving Peruvian artists and their manipulation by a powerful philandering viceroy was the recommendation of mezzo-soprano Isabel Leonard — who sings the title role with disarming comedic chops to rival her formidable pipes.
—Michael Andor Brodeur, Washington Post, 21 Mar. 2024
As an impressionist, Carvey's style was more, well, impressionist — his gabbling, discursive George H.W. Bush spinning out further and further while remaining resolutely tethered to some measure of loony reality.
—Dennis Perkins, EW.com, 14 Dec. 2023
These people believe the world is full of bad information — biased news, out-of-touch punditry, loony conspiracy theories.
—Kevin Roose, New York Times, 8 Oct. 2023
See all Example Sentences for loony
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'loony.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near loony
Cite this Entry
“Loony.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/loony. Accessed 7 Jul. 2024.
Copy CitationKids Definition
loony
adjective
loo·ny
variants
also looney
loonier; looniest
: very foolish or eccentric
looniness
noun
loony
noun
Etymology
an altered form of lunatic (adjective)
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