lunatic 1 of 2

adjective

Definition of lunaticnext
informal
as in foolish
showing or marked by a lack of good sense or judgment such lunatic clowning during a solemn ceremony is completely inappropriate

Synonyms & Similar Words

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Antonyms & Near Antonyms

lunatic

2 of 2

noun

informal
as in fool
a person who lacks good sense or judgment No, you can't ski off the roof, you lunatic!

Synonyms & Similar Words

Antonyms & Near Antonyms

Example Sentences

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.
Recent Examples of lunatic
Adjective
Police found Mazariegos, who fit the description of the lunatic hiding in the bushes, nearby, according to the probable cause affidavit. — Sean Joseph Outkick, FOXNews.com, 13 May 2026 Richard Attenborough once mischievously locked his brother inside a padded cell in a building on campus that was once a Victorian lunatic asylum, according to the university. — Amarachi Orie, CNN Money, 8 May 2026
Noun
Tony Hale, Alia Shawkat, Michael Cera, Will Arnett and other lunatics round out the cast. — Jordan Hoffman, Entertainment Weekly, 8 June 2026 People have been hurt so badly by radical left lunatics that worked for the Biden administration and Sleepy Joe. — NBC news, 7 June 2026 See All Example Sentences for lunatic
Recent Examples of Synonyms for lunatic
  1. insane
  2. fool
  3. stupid
  4. maniac
  5. mad
  6. goose
  7. foolish
  8. moron
Adjective
  • If that insane offer doesn’t plug the leak, the fire sale begins.
    — Dieter Kurtenbach, Mercury News, 19 Aug. 2026
  • That’s a big memory for me as a kid, so having that happen is insane.
    — Los Angeles Times, Los Angeles Times, 19 Aug. 2026
Definition of insane
Noun
  • Pyrite, commonly known as fool’s gold, is an unusual semiconductor.
    — Neetika Walter, Interesting Engineering, 15 Aug. 2026
  • There’s a version of this character that’s just the fool, and you’re disconnected from him, but Matthew takes you on a journey with this character.
    — Daniel D'Addario, Variety, 12 Aug. 2026
Definition of fool
Adjective
  • The Dodge Durango Hellcat is the most accessible way to go stupid-fast in a three-row family car thanks to the Escalade V‘s high price tag.
    — Byron Hurd, The Drive, 13 Aug. 2026
  • Proudly stupid and surprisingly sweet, Dylan Meyer’s stoner buddy comedy is a tribute to friendship best enjoyed with your own ride-or-die by your side — joints optional.
    — Angie Han, HollywoodReporter, 12 Aug. 2026
Definition of stupid
Noun
  • Unbeknownst to the visitors, there’s an unhappy fifth party already in the house… and more than one homicidal maniac even within that small populace.
    — Dennis Harvey, Variety, 28 July 2026
  • The odd thing about this choice is that, although the DSA’s platform is indeed chock-full of maniacal proposals, on this particular idea, the maniacs have a point.
    — Jonathan Chait, The Atlantic, 22 July 2026
Definition of maniac
Adjective
  • Frequent zoom-ins shown on screens showed sweat dripping down his face, and his hair resembled something similar to a mad scientist after an experiment blows up in their face.
    — Joseph Hernandez August 13, Kansas City Star, 13 Aug. 2026
  • These statements and actions, some conservatives said at the time in a finger-wagging tone, demonstrated that mass suicide at the feet of a power-mad dictator was the predictable result of radical left-wing politics.
    — James Kirchick, The Atlantic, 13 Aug. 2026
Definition of mad
Noun
  • Taylor Sheridan is Paramount's golden goose right now, creating the ultra-popular Yellowstone franchise along with a passel of other shows.
    — K. Thor Jensen, PC Magazine, 30 July 2026
  • They were provided by a speedy and adventurous black squirrel, who spent the better part of an inning on and around the playing field and at one point led an army of ground crew members on a wild goose — uh, squirrel — chase in right field.
    — Chuck Schilken, Los Angeles Times, 28 July 2026
Definition of goose
Adjective
  • That’s economically foolish and potentially devastating for patients.
    — Steve Forbes, Forbes.com, 17 Aug. 2026
  • As some of us will inevitably succumb to its grand and growing illusion, the rest may get the opportunity to find the key to understanding how so many others could be fooled and so foolish.
    — Letters to the Editor, The Orlando Sentinel, 9 Aug. 2026
Definition of foolish
Noun
  • God help us all if some idiot, some moron, ever put you in charge.
    — Greg Evans, Deadline, 18 July 2026
  • Mantzoukas was willing to look like a maniac and a moron in equal measure.
    — Roxana Hadadi, Vulture, 17 June 2026
Definition of moron

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Cite this Entry

“Lunatic.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/lunatic. Accessed 21 Aug. 2026.

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More from Merriam-Webster on lunatic

Nglish: Translation of lunatic for Spanish Speakers

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