psychopath Syllabification: (psy·cho·path)Pronunciation: /ˈsīkəˌpaTH/Translate psychopath | into French | into German | into Italian | into Spanish Definition of psychopath noun a person suffering from chronic mental disorder with abnormal or violent social behavior. informal an unstable and aggressive person:schoolyard psychopaths will gather around a fight to encourage the combatantspsychopath in other Oxford dictionaries Definition of psychopath in the British & World English dictionary