joined by an agreement or treaty.
some local groups united to form confederate councils
federal,confederated,federated,allied,in alliance,in league,cooperating,associated,united,combined,amalgamated
a person one works with, especially in something secret or illegal; an accomplice.
where was his confederate, the girl who had stolen Richard’s wallet?
bring (states or groups of people) into an alliance.
the treaty confederated the fourteen tribes