Thesaurus

insanity

noun

Synonyms & Antonyms of insanity

1 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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2 a foolish act or idea
  • everyone laughed at the latest insanity from the town eccentric

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Time Traveler for insanity

Time Traveler

The first known use of insanity was in 1590

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Cite this Entry

“Insanity.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/insanity. Accessed 19 Jan. 2021.

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More from Merriam-Webster on insanity

Dictionary: Definition of insanity

Medical Dictionary: Definition of insanity

Nglish: Translation of insanity for Spanish Speakers

Britannica English: Translation of insanity for Arabic Speakers

Britannica.com: Encyclopedia article about insanity

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