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
Whether those people are sickened by grief and rage into a kind of temporary insanity, genuine lunatics, hustlers looking to milk a little more engagement or some combination of the three doesn’t really matter.
—
Chris Stirewalt, The Hill, 12 Sep. 2025
Those members of Bachelor Nation who aren't familiar with the #MomTok insanity will have several months to get up to speed, as Paul's season of The Bachelorette will not premiere until 2026.
—Kristen Baldwin, Entertainment Weekly, 10 Sep. 2025
That’s the most important thing in Anders’ films — to keep it real, even in the midst of insanity.
—Scott Roxborough, HollywoodReporter, 8 Sep. 2025
More Sargent/Getty Images The sheer insanity of how fast the ball got out of the ballpark captivated a worldwide audience.
—Jackson Roberts, MSNBC Newsweek, 3 Sep. 2025
See All Example Sentences for insanity
Chris Stirewalt, The Hill, 12 Sep. 2025
Those members of Bachelor Nation who aren't familiar with the #MomTok insanity will have several months to get up to speed, as Paul's season of The Bachelorette will not premiere until 2026.
—Kristen Baldwin, Entertainment Weekly, 10 Sep. 2025
That’s the most important thing in Anders’ films — to keep it real, even in the midst of insanity.
—Scott Roxborough, HollywoodReporter, 8 Sep. 2025
More Sargent/Getty Images The sheer insanity of how fast the ball got out of the ballpark captivated a worldwide audience.
—Jackson Roberts, MSNBC Newsweek, 3 Sep. 2025
See All Example Sentences for insanity
Recent Examples of Synonyms for insanity
Noun
-
Newlywed Rachel Berry, 43, decided to tie the knot with her husband, Mike, at Foxhunters Care Community in Wales, where her 75-year-old mother, Ruth, lives with dementia, according to the BBC.—
Raven Brunner,
PEOPLE,
26 Sep. 2025
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Scientists have just taken the most detailed look yet at the biology of a record-breaking human life, profiling a woman who lived to 117 years and 168 days free of cancer, cardiovascular disease and dementia.—
New Atlas,
New Atlas,
24 Sep. 2025
Noun
-
Turn the absurdity up to 11 as well.—
Erik Shilling,
Robb Report,
26 Sep. 2025
-
As represented by Camus, absurdism emphasizes accepting the absurdity of life and finding joy without illusions, often through gallows humor.—
Big Think,
Big Think,
25 Sep. 2025
Noun
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As betrayal and madness loom, Amanda is forced to confront her deepest fears and make an ultimate choice between freedom and acceptance.—
Christopher Vourlias,
Variety,
25 Sep. 2025
-
Speaking after the trial day on Monday night, Hinshaw expressed concern about his friend's fate but suggested there might be a method to the madness of Routh's unorthodox defense strategy.—
Peter Charalambous,
ABC News,
23 Sep. 2025
Noun
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McCarthy and his cronies engineered a hysteria over left-wing ideologies and their sympathizers, encouraging tactics like loyalty oaths and provoking paranoia over a suggestion that communist spies were omnipresent in America.—
Maureen Lee Lenker,
Entertainment Weekly,
18 Sep. 2025
-
Our hearts go out to his family, but this should not have become a springboard for hysteria, partisanship, and meltdown.—
Paul Bedard,
The Washington Examiner,
13 Sep. 2025
Noun
-
Its stupidity was entertaining, but its stupidity also freed me from having to think about it.—
Bilge Ebiri,
Vulture,
30 Sep. 2025
-
The only reason for this incessant stupidity?—
Erik Kain,
Forbes.com,
18 Sep. 2025
Noun
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The unique blend adds a punch of additional tangy flavor that perfectly complements the creaminess and simplicity of basic egg salad.—
Kaitlyn Yarborough,
Southern Living,
26 Sep. 2025
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Clean lines, oversized custom windows, and an airy open-concept design create a modern elegance rooted in simplicity and natural light.—
Miriam Schwartz,
Boston Herald,
25 Sep. 2025
Noun
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Zarutska's death has raised questions about safety and policing in Charlotte as Brown was known to the police as having schizophrenia and had arrests and convictions over multiple years.—
Kate Plummer,
MSNBC Newsweek,
24 Sep. 2025
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Neely had schizophrenia, was behaving erratically, high on drugs and threatening riders.—
Michael Ruiz,
FOXNews.com,
23 Sep. 2025
Noun
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But my naivete and idiocy about what this was going to take was staggering to me just six months later.—
Scott Feinberg,
HollywoodReporter,
19 Aug. 2025
Cite this Entry
“Insanity.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/insanity. Accessed 2 Oct. 2025.
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