Confederate

1. United in a league; allied by treaty; engaged in a confederacy; banded together; allied.
2. A name designating an adherent to the cause of the States which attempted to withdraw from the Union (1860-1865).
3. One who is united with others in a league; a person or a nation engaged in a confederacy; an ally; also, an accomplice in a bad sense.
4. To unite in a league or confederacy; to ally.
5. To unite in a league; to join in a mutual contract or covenant; to band together.