LUNATIC Synonyms: 218 Similar and Opposite Words

lunatic 1 of 2

adjective

Definition of lunatic

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

Adjective

The new season has been absolutely insane through four episodes as the hunt to save Joe (Zoe Saldaña) from her kidnappers is underway.

— David Hookstead OutKick, FOXNews.com, 25 Aug. 2026
If Gigi is malintentioned and insane and a homewrecker, there’s no story, right?

— Hilary Lewis, HollywoodReporter, 25 Aug. 2026

Definition of insane

Noun

Many of the most viral videos that are part of the trend also play with social power dynamics by having the creator make a fool of someone who may be older, male or even their boss — further evidence of how social media use is changing online.

— David Mack, CNN Money, 20 Aug. 2026
Sho Fujita, Burroughs, running back, senior Don’t let the 5-foot-6 size fool you.

— Ethan Hanson, Daily News, 19 Aug. 2026

Definition of fool

Adjective

Far too much coverage of declining trust in science — particularly the anti-vaccine movement — is predicated on the assumption that its adherents are either stupid or crazy.

— Rick Berke, STAT, 19 Aug. 2026
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

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

Noun

Crown Royal whisky, goose down jackets, ice-hockey equipment and a long list of other Canadian goods could become much more expensive for American consumers.

— Amy B Wang, Washington Post, 22 Aug. 2026
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

Definition of goose

Adjective

Riley has a talented veteran QB (Jayden Maiava), a strong O-line and now mad scientist Gary Patterson as defensive coordinator.

— Stewart Mandel, New York Times, 20 Aug. 2026
It was worshipped as a goddess, believed to drive people mad, and even considered a realm for the dead.

— Encyclopedia Britannica, Encyclopedia Britannica, 18 Aug. 2026

Definition of mad

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Style

“Lunatic.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/lunatic. Accessed 29 Aug. 2026.

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Synonyms of lunatic

adjective

noun

Example Sentences

Browse Nearby Words

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