Meaning of INSANITY in English

INSANITY

1.

Insanity is the state of being insane.

The defence pleaded ~, but the defendant was found guilty and sentenced.

= madness

N-UNCOUNT

2.

If you describe a decision or an action as ~, you think it is very foolish.

...the final financial ~ of the 1980s.

N-UNCOUNT: usu with supp, oft N of n disapproval

Collins COBUILD.      Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) .