(n.) A person who relapses; a hapitual criminal\.

Adamic Sabbath-breaker apostate atavistic atheist atheistic backslider backsliding bad egg bad lot black sheep blasphemer blasphemous bolter carnal collaborationist collaborator convert defector degenerate deserter erring fallen fallen angel fallen from grace fifth columnist fleshly frail impious impure infirm irreligious irreverent lapsed lecher lost lamb lost sheep lost soul miscreant mugwump of easy virtue peccable pervert pimp postlapsarian prodigal prodigal son profanatory profane profligate proselyte quisling reactionary recessive recidivistic recidivous recreant regressive renegade renegado renegate repeater reprobate retrograde retrogressive retrorse retroverse returnable returnee reversible reversional reversionary reversioner reversionist revertible revulsionary runagate sacrilegious sacrilegist scapegrace schismatic seceder secessionist separatist sorry lot strikebreaker tergiversant tergiversator traitor trollop turnabout turncoat turntail two-time loser unangelic unbeliever unchaste unclean undutiful ungodly ungood unrighteous unsaintly unvirtuous virtueless wanton wayward weak whore