Meaning of INSANITY in English

INSANITY

/in san"i tee/ , n. , pl. insanities .

1. the condition of being insane; a derangement of the mind.

2. Law. such unsoundness of mind as affects legal responsibility or capacity.

3. Psychiatry. (formerly) psychosis.

4. extreme folly; senselessness; foolhardiness.

[ 1580-90; insanitas. See IN- 3 , SANITY ]

Syn. 1. dementia, lunacy, madness, craziness, mania, aberration.

Random House Webster's Unabridged English dictionary.      Полный английский словарь Вебстер - Random House .