A disbeliever, a denier: someone who rejects or disbelieves in God as per Islam (Arabic: الله Allāh) or the tenets of Islam; or more broadly any non-Muslim.
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.
Someone freed from slavery in Ancient Rome; a freedman.
Dissolute, licentious, profligate; loose in morals.