of or pertaining to a personality style characterized by perfectionism, indecision, conscientiousness, concern with detail, rigidity, and inhibition.
Psychiatry.of or pertaining to a neurosis characterized by persistent intrusion of unwanted thoughts (obsessions) or the performance of actions, as repeated hand-washing, that one is unable to stop (compulsions).
obsessive-compulsiveadj. Having a tendency to dwell on unwanted thoughts or perform certain repetitious rituals, especially as a defense against anxiety from unconscious conflicts. n. A person who exhibits obsessive-compulsive behavior.