INSANITY Synonyms: 123 Similar and Opposite Words

insanity

noun

in-ˈsa-nə-tē

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

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Antonyms & Near Antonyms

as in absurdity

a foolish act or idea everyone laughed at the latest insanity from the town eccentric

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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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Example Sentences

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Recent Examples of insanity The woman who shot him was later declared not guilty by reason of insanity and committed to a state institution. —

Clifford Ward, Chicago Tribune, 19 June 2026 That's different than an insanity defense, which usually seeks total absolution, Schoenstein said. —

Mark Prussin, CBS News, 18 June 2026 As Sabbath’s primary lyricist during the Ozzy years, Geezer established heavy metal’s obsessions with dread, apocalypse, insanity, and the darker corners of spirituality. —

Steve Appleford, SPIN, 17 June 2026 Then control over the language, vision, a certain degree of insanity, and great poetic images. —

Erik Pedersen, Oc Register, 16 June 2026 See All Example Sentences for insanity

Recent Examples of Synonyms for insanity

Noun

All had extremely low omega-3 levels and at least one risk factor for dementia, such as obesity, sedentary lifestyle, high blood pressure or cholesterol.

— Sandee LaMotte, CNN Money, 18 June 2026
Emma has taken on a caregiver role for Bruce in the last four years after he was diagnosed with aphasia and stepped away from acting in 2022 and received a frontotemporal dementia (FTD) diagnosis the following year.

— Tommy McArdle, PEOPLE, 18 June 2026