insanity

in·san·i·ty

noun \in-ˈsan-ət-ē\

plural in·san·i·ties

Definition of INSANITY

1

: a severely disordered state of the mind usually occurring as a specific disorder (as paranoid schizophrenia)

2

: unsoundness of mind or lack of the ability to understand that prevents one from having the mental capacity required by law to enter into a particular relationship, status, or transaction or that releases one from criminal or civil responsibility