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.
A strict follower of a doctrine.
One who believes dogmatically in something regardless of evidence or even conclusive proof that the thing is false or was staged; one who has true-believer syndrome.
Used other than figuratively or idiomatically: see true, believer.