Apostate :: Apostate (n.) One who has forsaken the faith, principles, or party, to which he before adhered; esp., one who has forsaken his religion for another; a pervert; a renegade..
Apostate :: Apostate (n.) One who, after having received sacred orders, renounces his clerical profession..
Apostate :: Apostate (a.) Pertaining to, or characterized by, apostasy; faithless to moral allegiance; renegade..
Apostatize :: Apostatize (v. i.) To renounce totally a religious belief once professed; to forsake one's church, the faith or principles once held, or the party to which one has previously adhered..