insanity

Pronunciation

• (US) IPA ^(key): /ɪnˈsænɪti/

• Audio (US)

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Noun

Singular insanity

Plural insanities

1. (uncountable) Insanity is the condition of being seriously mentally ill and unable to perceive reality as other people do.
   • Synonym: madness

   The case had driven him to insanity.

2. (countable & uncountable) Insanity is a situation that is very foolish.

   It was pure insanity to rebel at a time like this.

Related words

• sane
• insane
• sanity