One who secedes, such as from a country or organization(noun)
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Use "seceder" in a sentence
"Methodists, and the Roman Catholics had expressed very openly, and no sooner did he, by an equal exertion of his intellect, point put the most feasible method of solving the difficulty, than a storm of abuse most lavishly bespattered him, and he was called a seceder from the"
"Sir John Hawkins [1] represents himself as a 'seceder' from this society, and assigns as the reason of his 'withdrawing' himself from it, that its late hours were inconsistent with his domestick arrangements."
"Popular former Mayor Bill White won a resounding victory in the Democratic primary and will face right-wing seceder-in-chief Governor Rick Perry."