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
as in fool
a person who lacks good sense or judgment
No, you can't ski off the roof, you lunatic!
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Antonyms & Near Antonyms
Example Sentences
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Recent Examples of lunatic
Amarachi Orie,
CNN Money,
8 May 2026
Those who know better but act badly deserve the scorn of the people — maybe more than the lunatic-in-chief.
—
Lucas Robinson,
San Diego Union-Tribune,
7 May 2026
Voice Of The People,
New York Daily News,
29 Apr. 2026
Friends with a sudden devotion to nature begin making plans to convene in parks; TurboTax becomes your closest email companion; your risk of injury at the hands of a lunatic on a City Bike, haunted by the memory of a New Year’s resolution to exercise, may increase.
—
Elly Leavitt,
Vogue,
25 Mar. 2026
See All Example Sentences for lunatic
Adjective
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
Those who know better but act badly deserve the scorn of the people — maybe more than the lunatic-in-chief.
—
Lucas Robinson,
San Diego Union-Tribune,
7 May 2026
Noun
To get a sentence like that in a communist, radically left-wing city of liberal lunatics is truly amazing.
—
Voice Of The People,
New York Daily News,
29 Apr. 2026
Friends with a sudden devotion to nature begin making plans to convene in parks; TurboTax becomes your closest email companion; your risk of injury at the hands of a lunatic on a City Bike, haunted by the memory of a New Year’s resolution to exercise, may increase.
—
Elly Leavitt,
Vogue,
25 Mar. 2026
See All Example Sentences for lunatic
Recent Examples of Synonyms for lunatic
Adjective
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That’s an insane thing to believe.
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And ultimately, the premise of the show is insane horror tropes are happening to boring, normal people.
Noun
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Don’t let the cream’s $8 price tag fool you; the anti-aging find tackles fine lines, wrinkles, and clogged pores, all while being gentle enough for all skin types.
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This is an ignoble war making monsters and fools out of its participants, and against the uncontrollable weapons that are dragons, everyone’s resolve is crumbling.
Adjective
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But even the most perfect Constitution can be undone by the wicked with the help of the bought, the stupid, and the cowardly.
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White can believe Hokit said something stupid and still believe fighters should be allowed to speak for themselves.
Noun
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Mantzoukas was willing to look like a maniac and a moron in equal measure.
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The Martin Lawrence vehicle Martin, which ran for five glorious seasons, offered a terrific platform for Lawrence to run around like a maniac as an energetic radio DJ.
Adjective
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Initially skeptical, Tom becomes increasingly paranoid after a sailor who got lost in the fog essentially goes mad, with his eyes turning white just before dying.
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Relative bargain Please do not be mad at me for relaying this insurance math.
Noun
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Each morning, the city's street-flusher truck cleans goose droppings from the riverfront concrete walkway, but officials said the equipment cannot remove droppings left on grassy areas.
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Was there pressure on you as this goose whose golden eggs were all going to Apple?
Adjective
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It’s presented without winks or nudges, neither as a joke nor necessarily foolish.
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If the target was foolish enough to reuse passwords, credential thefts like these could enable the compromise of more important accounts.
Noun
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Mantzoukas was willing to look like a maniac and a moron in equal measure.
-
Lluís then calls Puig Antich a moron.
Cite this Entry
“Lunatic.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/lunatic. Accessed 26 Jun. 2026.
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