Insanity noun

iná_saná_iá_ty | \ in-_sa-n_-t_ \
plural insanities
Definition of insanity
1dated : a severely disordered state of the mind usually occurring as a specific disorder
2law : 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
3a: extreme folly or unreasonableness
the insanity of violence
His comments were pure insanity.
b: something utterly foolish or unreasonable
the insanities of modern life