A mentally ill person.
A person suffering from psychopathic personality, whose behavior is aggressively antisocial
A person who acts in a wildly irresponsible way:
A person who is affected by lunacy; a mentally deranged person.
The personality of such a person
A person with little or no judgment, common sense, wisdom, etc.; silly or stupid person; simpleton
Find another word for psychopath. In this page you can discover 18 synonyms, antonyms, idiomatic expressions, and related words for psychopath, like: bedlamite, sociopath, maniac, lunatic, mental-case, madman, psychopathic, sadist, loner, con-man and megalomaniac.