An impulse control disorder that results in an irresistible urge to steal. Kleptomania definition, an irresistible impulse to steal, stemming from emotional disturbance rather than economic need. Kleptomaniac definition, a person who has kleptomania. Kleptomania (klep-toe-MAY-nee-uh) is the recurrent inability to resist urges to steal items that you generally don't really need and that usually have little value. 4 days ago · kleptomania definition: 1. Kleptomania is the inability to resist the urge to steal items, usually for reasons other than.