having separated or advocating separation from another entity or policy or attitude; "a breakaway faction"
an advocate of secession or separation from a larger group (such as an established church or a national union)
One who withdraws or separates himself; especially, one who withdraws from a church to which he has belonged; a seceder from an established church; a dissenter; a nonconformist; a schismatic; a sectary
Separatists are people who want their own separate government or are involved in separatist activities. The army has come under attack by separatists. someone who belongs to a group that wants to start a new country with its own government, by separating from the country that they belong to now
Separatist organizations and activities within a country involve members of a group of people who want to establish their own separate government or are trying to do so. the Basque separatist movement