insanity Meaning in the Cambridge Learner’s Dictionary
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Meaning of “insanity” - Learner’s Dictionary

insanity

noun [U]
 
 
/ɪnˈsænəti/
MENTAL ILLNESS serious mental illnessMental and psychiatric disorders
STUPID a very stupid thing to do: It would be insanity to expand the business at the moment.Stupid and sillyOf unsound mind
(Definition of insanity from the Cambridge Learner’s Dictionary © Cambridge University Press)
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