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n. An advocate of disunion, especially a secessionist during the U.S. Civil War.

n. A supporter of disunionism.

n. An advocate of disunion, specifically, of disunion of the United States.

n. An advocate of disunion; specifically, in United States history, one of those who, prior to and during the civil war of 1861-65, favored or sought the disruption of the United States.

"Cushing was able to orchestrate his disunionist grand strategy with the help of two key colleagues, each of whom would rise with his steerage to key positions within both Confederate circles and that of the elite inner circle of Scottish Rite Masonry in Charleston: Albert Pike and John C. Breckinridge."

dissector    assery    ultraism    colonizer    sojourners