- in·san·i·ty
- Pronunciation:
- \in-'sa-n?-te\
- Function:
- noun
- Inflected Form(s):
- plural in·san·i·ties
- Date:
- 1590
1: a
deranged state of the mind usually occurring as a specific disorder (as
schizophrenia)2:
such unsoundness of mind or lack of understanding as prevents one from having
the mental capacity required by law to enter into a particular relationship,
status, or transaction or as removes one from criminal or civil
responsibility3 a:
extreme folly or unreasonableness b: something utterly foolish or
unreasonable