Crossword clue: an advocate of secession or separation from a larger group (such as an established church or a national union)

The most common answer is separationist (13 letters).

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

Possible answers

separationist 13 letters wn-def

an advocate of secession or separation from a larger group (such as an established church or a national union)

separatist 10 letters wn-def

an advocate of secession or separation from a larger group (such as an established church or a national union)