WordNet (r) 3.0 (2006):

psychopathic personality
    n 1: a personality disorder characterized by amorality and lack
         of affect; capable of violent acts without guilt feelings
         (`psychopathic personality' was once widely used but was
         superseded by `sociopathic personality' to indicate the
         social aspects of the disorder, but now `antisocial
         personality disorder' is the preferred term) [syn:
         antisocial personality disorder, sociopathic
         personality, psychopathic personality]