separatist (n.)
- apostate
- backslider
- breakaway
- collaborationist
- collaborator
- convert
- defector
- demurrer
- deserter
- dissenter
- dissident
- misbeliever
- mugwump
- nonconformist
- objector
- proselyte
- protestant
- protester
- quisling
- recidivist
- recreant
- recusant
- renegade
- reversionist
- secessionist
- sectarian
- sectary
- strikebreaker
- tergiversator
- traitor
- turnabout
- turncoat
separatist (adj.)
- apostate
- breakaway
- dissentient
- dissident
- nonconformist
- protestant
- recreant
- recusant
- renegade
- renunciative
- repudiative
- schismatic
- sectarian
