United in a league; allied by treaty; engaged in a confederacy; banded together; allied.
- A member of a confederacy; an ally.
- One who assists in a plot; an accomplice. See Synonyms at partner.
- A supporter of the Confederate States of America.
- United in a confederacy; allied.
- Of or having to do with the Confederate States of America.
- To form into or become part of a confederacy.