The definition of a psychopath is a person who is unstable, insane, abnormally violent or unable to maintain normal social behavior.
(noun)A person who commits multiple murders for fun is an example of a psychopath.
See psychopath in Webster's New World College Dictionary
noun
Origin: back-form. < psychopathy
See psychopath in American Heritage Dictionary 4
noun
Origin:
Origin: Back-formation from psychopathic
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