sep·a·ra·tist 
(sĕpər-ə-tĭst, sĕprə-, sĕpə-rā′-)
(sĕpər-ə-tĭst, sĕprə-, sĕpə-rā′-)n.
1. One who secedes or advocates separation from a group, as from a nation or an established church.
2. One who advocates cultural, ethnic, or racial separation.
sepa·ra·tism n.
sepa·ra·tist adj.
sep′a·ra·tistic adj.