1. (adj)separatist, separationist an advocate of secession or separation from a larger group (such as an established church or a national union) Synonyms: separationist, separatist Antonyms: dependent
2. (adj)breakaway, fissiparous, separatist having separated or advocating separation from another entity or policy or attitude Synonyms: fissiparous, breakaway, separatist Antonyms: dependent