1. (a.) One who is united with others in a league, treaty, or alliance\.

2. (a.) of or pertaining to the government of the eleven Southern States of the United States which (1860-1865) attempted to establish an independent nation styled the Confederate States of America; as, the Confederate congress; Confederate money.

3. (n.) 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. (n.) A name designating an adherent to the cause of the States which attempted to withdraw from the Union (1860-1865).

5. (v. t.) To unite in a league or confederacy; to ally.

6. (v. i.) To unite in a league; to join in a mutual contract or covenant; to band together.

abettor accessory accompany accomplice accomplice in crime act in concert act together adjunct affiliate affiliated allied ally amalgamate associate associate with associated assort with attend band band together be in cahoots be in league bedfellow brother brother-in-arms bunch bunch up cabal cabalistic cement a union centralize club club together coact coadjutor coalesce coconspirator cohort collaborate collaborator colleague collude combine come together companion compatriot compeer comrade concert concord concur confederated confrere consociate consolidate consort consort with conspirator conspiratorial conspire cooperate corporate couple couple with coupled crony do business with enleagued federalize federate federated fellow fellow conspirator fellow member fellow traveler flock together fuse gang gang up get heads together get together go along with go in partners go in partnership go partners go with hang around with hang together harmonize herd together hold together hook up hook up with in cahoots in league in partnership in with join join forces join fortunes with join in join together join up with join with keep company with keep together league league together leagued make common cause married marry merge organize pair pair off paired partner partners with play ball pull together put heads together reciprocate run with socius criminis stand together stand up with team up team up with team with teamed throw in together throw in with tie in tie in with tie up tie up with unionize unite unite efforts unite with wait on wed wedded work together