(v. t.) To unite in compact, as different States; to confederate for political purposes; to unite by or under the Federal Constitution.

affiliate ally associate band together be in cahoots bunch bunch up cabal cement a union centralize club club together come together confederate consociate conspire couple federate gang gang up go in partners go in partnership hook up with join forces join fortunes with join together join up with join with league marry organize pair pair off partner stand together stand up with team up with team with throw in with tie in with tie up with unionize unite with wed