separatist

separatist
noun

a person who supports the separation of a particular group of people from a larger body on the basis of ethnicity, religion, or gender
分离主义分子；分裂主义者
his parents were religious separatists.
他父母亲是宗教分离分子。

adjective

of or relating to such separation or those supporting it
（与）分离（有关）的；（与）分离主义分子（有关）的
a separatist rebellion.
分离主义叛乱。