libertine (noun) - one who acts freely without moral restraint; a freethinker, particularly in religious matters; a dissolute person [lib-er-teen]
BREAKDOWN: LIBER- (free) + -INE (pertaining to)
libertinism is a lifestyle characterized by indulgence, promiscuity, and lack of self-restraint
libertinage is the conduct or activities of a libertine
“It is easier to make a saint out of a libertine than out of a prig.” —George Santayana