Obsessive-compulsive personality disorder refers to Cluster C (anxious or fearful) personality disorder featuring a pervasive pattern of preoccupation with orderliness, perfectionism, and mental and interpersonal control at the expense of flexibility , openness, and efficiency.
Other definition:
Obsessive-compulsive personality disorder refers to the personality disorder pervasive rigidity in one's activities and interpersonal relationships; includes qualities such as emotional constriction, extreme perfectionism, and anxiety resulting from even slight disruptions in one's routine ways. Moreover, it is a Cluster C (anxious or fearful) personality disorder featuring a pervasive pattern of preoccupation with orderliness, perfectionism, and mental and interpersonal control at the expense of flexibility, openness, and efficiency. Obsessive-compulsive personality disorder is intense perfectionism and inflexibility manifested in worrying, indecisiveness, and behavioral rigidity.