C1 noun /ɪnˈsæn.ə.ti/
Insanity
безумие; умственная болезнь
Meaning
the state of being seriously mentally ill; extreme foolishness or irrationality
Example
The defense lawyer argued that his client was not guilty by reason of insanity.
Адвокат защиты утверждал, что его клиент не виновен по причине безумия.