Laxi Dictionary

American Dictionary

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Definition insanity in American English

insanity noun

[uncountable] noun
/ɪnˈsænəti/
1

very severe mental illness that makes it impossible for someone to be considered legally responsible for their actions

Example

The judge found him not guilty by reason of insanity.

Synonyms and related words
illness disease sickness
2

very stupid or crazy behavior that can cause serious problems, harm, or injury

Example

It would be insanity to accept their offer.

Synonyms and related words
stupidity madness lunacy
Definition insanity in American English