a person who deserts a party or cause for another.

an apostate from a religious faith.

of or like a renegade; traitorous.

adjective

obedient , passive , submissive

noun

adherent , follower , passivist

adjective

apostate , backsliding , disloyal , dissident , heterodox , mutinous , outlaw , radical , reactionary , rebel , recreant , revolutionary , runaway , schismatic , traitorous , unfaithful , untraditional

noun

abandoner , apostate , backslider , betrayer , defector , deserter , dissident , double-crosser , escapee , exile , forsaker , fugitive , heretic , iconoclast , insurgent , mutineer , outlaw , rebel , recreant , refugee , runaway , schismatic , snake * , snake in the grass , tergiversator , traitor , turnabout , turncoat , runagate , outcast , radical , rogue elephant , vagabond

verb

apostatize , desert , tergiversate , turn