Synonyms:
- apostate,
- backslider,
- bolter,
- collaborationist,
- collaborator,
- convert,
- defector,
- deserter,
- fifth columnist,
- mugwump,
- proselyte,
- quisling,
- recidivist,
- recreant,
- renegade,
- renegado,
- renegate,
- reversionist,
- runagate,
- schismatic,
- seceder,
- secessionist,
- separatist,
- strikebreaker,
- tergiversant,
- tergiversator,
- traitor,
- turnabout,
- turncoat