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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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 In this world, at this time, a little insanity can go a long way. —

Neil Senturia, San Diego Union-Tribune, 30 Mar. 2026 Kennedy calls fortification ‘insanity’ That view contrasts sharply with critics — including some at the highest level of government — who regard fortification of the food supply as a form of government overreach. —

Jonel Aleccia, Los Angeles Times, 29 Mar. 2026 No artist ever mocked the insanity of the Hollywood cartoon stystem with such devastating incisiveness, and yet loved its creative output so much. —

Glenn Garner, Deadline, 28 Mar. 2026 Dominguez, who appeared with defense attorney, Yolo County deputy public defender Daniel Hutchinson, has pleaded not guilty by reason of insanity in the killings of David Breaux, 50, and Karim Abou Najm, 20, in Davis’ Central and Sycamore parks in late April 2023. —

Darrell Smith, Sacbee.com, 26 Mar. 2026 See All Example Sentences for insanity

Recent Examples of Synonyms for insanity

Noun

However, with a broader definition, women’s health now encompasses all of the conditions that affect women disproportionately, uniquely, and differently, from autoimmune conditions to chronic pain and dementia.

— Alexa Mikhail, Flow Space, 10 Apr. 2026
Your brain on a plant-rich diet Eating more plant foods than animal products is linked to a lower risk of dementia, even in older age, according to a new study.

— Tricia Escobedo, CNN Money, 9 Apr. 2026