Synonyms for confederate

federated, combined, confederated, federate, in alliance, incorporated, corporate, united, federal, unionized, syndicated, amalgamated, leagued, allied, associated, organized, in league, in cahoots*; see also joined, united.

ally, accomplice, associate, partner;

secessionist, Rebel, Southern, slave, slaveholding, south of the Mason Dixon line.

Southerner, secessionist, one of the Gray, Johnny Reb*; see rebel 1.