Noun | 1. | personality disorder - inflexible and maladaptive patterns of behavior folie, mental disorder, mental disturbance, psychological disorder, disturbance - (psychiatry) a psychological disorder of thought or emotion; a more neutral term than mental illness maladjustment - the condition of being unable to adapt properly to your environment with resulting emotional instability antisocial personality disorder, psychopathic personality, sociopathic personality - 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lack of affect; capable of violent acts without guilt feelings (`psychopathic personality' was once widely used but was superseded by `sociopathic personality' to indicate the social aspects of the disorder, but now `antisocial personality disorder' is the preferred term) schizoid, schizotypal personality - characterized by symptoms similar to but less severe than schizophrenia |