The noun form of the adjective 'insane' is insaneness.
A related noun form is insanity.
The noun of insane is insanity
The abstract noun forms of the adjective 'insane' are insaneness and insanity.
adective
The noun form of the adjective 'mental' is mentality.
The same word "lunatic" is used as a noun and its associated adjective. The noun actually means a lunatic person, someone who is insane or mentally unsound. The noun for the state, or something similarly mindless, is "lunacy."
The noun 'lunatic' is singular, common noun; an antiquated term for an insane person, derived from the belief that a person was driven mad by the changes in the moon. The word 'lunatic' is also an adjective, used to describe a noun (That was a lunatic thing to do.)
Uomo pazzo is an Italian equivalent of the English phrase "insane man."Specifically, the masculine noun uomo means "man" and may be preceded by the definite article l'* ("the") or the indefinite un ("a, one"). The masculine adjective pazzo means "crazy, insane." The pronunciation is "WOH-moh PAHT-tsoh."*It actually is il. But the vowel drops and is replaced by an apostrophe when the following noun begins with a vowel.
Are you insane Are you insane Are you insane
more insane, most insane
Crazy is an adjective (insane, foolish, or illogical).There is a related abstract noun, "craziness."
The noun or adjective criminal has the adverb form "criminally." It is commonly seen modifying adjectives as in criminally negligent or criminally insane.
The slang term psycho is used both as an adjective (crazy) and a noun (insane person).It derives from the words psychopathic / psychopath.
Insane in the membrane Insane in the brain