[lib.er.tine] n [ME libertyn freedman, fr. L libertinus, fr. libertinus, adj., of a freedman, fr. libertus freedman, fr. liber] (1577) 1: a freethinker esp. in religious matters--usu. used disparagingly
2: a person who is unrestrained by convention or morality; specif: one leading a dissolute life -- libertine adj