noun

insanity

insanity, madness, lunacy

He was found not guilty by reason of insanity.

He was found not guilty by reason of insanity.

It would be insanity to try to climb that mountain.

It would be insanity to try to climb that mountain.

((noun)) the state of being seriously mentally ill It would be insanity to try.

Synonyms: madness, lunacy, craziness; Antonyms: sanity, reason

From Latin 'in-' (not) + 'sanus' (sane, healthy). The state of not being sane.

Think 'IN-SANE-ITY' - the state of NOT being SANE.

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