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