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

As a result, the party increasingly fell under the sway of the lunatic left. — Chris Roemer, Baltimore Sun, 10 June 2026 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

Noun

As a Spurs fan, I was particularly invested in Campbell in an England shirt and recall charging around the living room like a lunatic before the reality that it had been chalked off hit home. — The Athletic Uk Staff, New York Times, 18 June 2026 The lunatics are running the asylum. — Eugenie Brinkema, ARTnews.com, 14 June 2026 See All Example Sentences for lunatic

Recent Examples of Synonyms for lunatic

Adjective

Many have told me that Veronica Beard has copied more small brands, this is insane.

— Lisa Lockwood, Footwear News, 19 Oct. 2026
Has everyone made it through an insane weekend of college football with their sanity intact?

— Adam Lichtenstein, Sun Sentinel, 18 Oct. 2026

Definition of insane

Noun

But Thomas and Erika are no fools, coolly telling off smiling Hitler sympathizers during a tony reception.

— Los Angeles Times, Los Angeles Times, 23 Oct. 2026
The Atlanta Dream might now be the hottest ticket in town and State Farm Arena would be fools not to host them in Game 6.

— Don Riddell, CNN Money, 22 Oct. 2026

Definition of fool

Adjective

But also, the audience is not used to people delivering blunt questions — no matter how stupid the answer.

— Jade Tran, Washington Post, 19 Oct. 2026
Pierce and Kember were born in the same place on the same day, a lore-enhancing coincidence too stupid to make up.

— Gabriel Szatan, Pitchfork, 18 Oct. 2026

Definition of stupid

Noun

David extended a hand toward me (imaginary attacks by slow, handshake-wielding maniacs are a martial arts class staple).

— Johanna Stein, Los Angeles Times, 11 Sep. 2026
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

Definition of maniac

Noun

In short, the encyclopedia is being destroyed by its biggest beneficiaries, like a golden goose slaughtered for slop-pâté.

— Julian Lucas, New Yorker, 21 Oct. 2026
Ternus’ interaction with IShowSpeed is clearly designed to capture this (and, of course, to goose preorder numbers among the influencer’s young and massive audience).

— Andrew R. Chow, Time, 15 Oct. 2026

Definition of goose

Adjective

These three are just the latest in a mad rush for capital that has been putting a strain on the AI trade.

— Zev Fima, CNBC, 26 Oct. 2026
Both about power-mad blondes getting involved with the shadier side of the medical industrial complex, but Matt Hagen’s nanites worked, dammit!

— Bethy Squires, Vulture, 25 Oct. 2026

Definition of mad

Noun

The fact that there is someone out there who could actually get all the real unsuspecting morons who participated in this movie to sign off on it afterwards is simply astonishing considering what they are asked to do in it.

— Pete Hammond, Deadline, 22 Oct. 2026
The unlikely source is Enervate’s company stooge corporate strategist, Ken Davies (Tim Key), a moron by any measure.

— Ben Travers, IndieWire, 9 Sep. 2026

Definition of moron

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Style

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

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Synonyms of lunatic

adjective

noun

Example Sentences

Browse Nearby Words

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