1
as in dementia
a serious mental disorder that prevents one from living a safe and normal life
his incurable insanity requires that he spend the rest of his life in a mental hospital
Synonyms & Similar Words
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Antonyms & Near Antonyms
2
as in absurdity
a foolish act or idea
everyone laughed at the latest insanity from the town eccentric
Synonyms & Similar Words
Antonyms & Near Antonyms
3
as in madness
lack of good sense or judgment
had the insanity to think that taking over a government building in protest of our foreign policy was a good idea
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Antonyms & Near Antonyms
Example Sentences
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Recent Examples of insanity
The Mission: Impossible franchise (1996-2025) Cruise has played fearless IMF agent Ethan Hunt in eight movies spanning 30 years — longer than any one actor has played James Bond — and the sheer insanity of the films (and the actor's stunts) only continues to ramp up.
—
Wesley Stenzel, EW.com, 24 May 2025
But this contest, on both sides, shows the insanity of electing judges.
—Sun Sentinel Editorial Board, Sun Sentinel, 8 May 2025
Sending yet another one back to City Hall would be the definition of insanity.
—Whitney Tilson, New York Daily News, 5 June 2025
Alissa pleaded not guilty by reason of insanity, but he was found competent to stand trial in 2023 after spending time at a mental hospital.
—John Bacon, USA Today, 4 June 2025
See All Example Sentences for insanity
Wesley Stenzel, EW.com, 24 May 2025
But this contest, on both sides, shows the insanity of electing judges.
—Sun Sentinel Editorial Board, Sun Sentinel, 8 May 2025
Sending yet another one back to City Hall would be the definition of insanity.
—Whitney Tilson, New York Daily News, 5 June 2025
Alissa pleaded not guilty by reason of insanity, but he was found competent to stand trial in 2023 after spending time at a mental hospital.
—John Bacon, USA Today, 4 June 2025
See All Example Sentences for insanity
Recent Examples of Synonyms for insanity
Noun
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Due to his battle with dementia, Wilson was placed under a conservatorship in February 2024, weeks after the death of his wife, Melinda Ledbetter Wilson.—
Jami Ganz,
New York Daily News,
26 June 2025
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Fannie’s Friends support group: Fannie’s Friends is a virtual support group for adult daughters and granddaughters caring for those living with dementia.—
Joe Rassel,
The Orlando Sentinel,
25 June 2025
Noun
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Mika Rottenberg’s work explores the pure absurdities of our current world.—
Nargess Banks,
Forbes.com,
25 June 2025
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These over-the-top moments and the absurdity of its title may be the elements that made Zombi 2 famous, but beneath them is a movie with an eerie, uncanny vibe that's shockingly easy to get lost in.—
James Grebey,
Time,
20 June 2025
Noun
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The there is the early childhood of the people she’s been visiting, most of whom are now in their late 80s or 90s — the innocent pre-World War II days before the round-ups, the concentration camps, the madness, the murder.—
Christine DiMattei,
Sun Sentinel,
18 June 2025
-
Irresistible madness: Boca Juniors and Benfica see red, Chelsea ease past LAFC Now then.—
Phil Hay,
New York Times,
17 June 2025
Noun
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An Early Frost attempted the nearly impossible: Transform hysteria into empathy.—
Hal Rubenstein,
HollywoodReporter,
11 June 2025
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While posed as being about a threat from without, this U.S. hysteria had everything to do with domestic realities.—
Time,
Time,
9 June 2025
Noun
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Critics often assume ego, stubbornness, or simply stupidity.—
Robert Pearl,
Twin Cities,
14 June 2025
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The following program will contain graphic stupidity, as four friends compete to embarrass one another – only this time in Lithuania.—
Jesse Whittock,
Deadline,
9 June 2025
Noun
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Each brand employs a strikingly similar aesthetic vocabulary: muted color palettes dominated by whites, blacks, and earth tones; sans-serif typography that suggests clinical precision; and packaging that prioritizes geometric simplicity over ornamental flourish.—
Adam Hurly,
Robb Report,
24 June 2025
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In fact, many found AI content to be more personable and enjoyable, possibly due to its simplicity and accessibility.—
Katie Jewett,
Forbes.com,
24 June 2025
Noun
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Her mom rarely left bed because the medication that tamed her schizophrenia made her lethargic.—
Jayme Fraser,
USA Today,
16 June 2025
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With less qualified experts to treat mental health conditions, more Americans could suffer from drug overdoses and mental conditions like schizophrenia.—
Omer Awan,
Forbes.com,
8 June 2025
Cite this Entry
“Insanity.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/insanity. Accessed 1 Jul. 2025.
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