insanity

noun
UK: /ɪnˈsæn.ə.ti/
US: /ɪnˈsæn.ə.t̬i/

  1. The state of being seriously mentally ill; madness.

    1. His insanity made him a danger.
    2. The doctor confirmed his insanity after a thorough examination of his mental state.

  2. Extremely foolish or unreasonable behavior.

    1. It's insanity to drive that fast.
    2. Spending all our savings on a luxury car is pure insanity, given our financial situation.

Synonyms

madness lunacy folly absurdity

Frequently Asked Questions

The word "insanity" in English means: The state of being seriously mentally ill; madness., Extremely foolish or unreasonable behavior..

The phonetic transcription of "insanity" is /ɪnˈsæn.ə.ti/ in British English and /ɪnˈsæn.ə.t̬i/ in American English. Click the 🔊 button to hear both pronunciations.

Synonyms for "insanity": madness, lunacy, folly, absurdity.

Example usage of "insanity": "His insanity made him a danger.". More examples on the page.