THESAURUS
throw in with
act with, affiliate, align with, ally, associate, band together, be in cahoots, bunch, bunch up, cabal, cement a union, centralize, club, club together, come together, confederate, consociate, conspire, couple, federalize, federate, flock to, gang, gang up, get together with, go along with, go in partners, go in partnership, go in with, hook up with, join, join forces, join fortunes with, join hands with, join together, join up with, join with, league, line up with, marry, organize, pair, pair off, partner, rally round, range with, side with, stand in with, stand together, stand up with, strike in with, string along with, swing in with, take part with, take sides with, team up with, team with, tie in with, tie up with, unionize, unite with, wed