A lifestyle or pattern of behavior characterized by self-indulgence and lack of restraint, especially one involving sexual promiscuity and rejection of religious or other moral authority.

plural of libertinism

(historical) Someone freed from slavery in Ancient Rome; a freedman.

One who is freethinking in religious matters. / Someone (especially a man) who takes no notice of moral laws, especially those involving sexual propriety; someone loose in morals; a pleasure-seeker.

Dissolute, licentious, profligate; loose in morals.

plural of libertine