accord act in concert act together affiliate agree ally amalgamate answer to assent associate assort with band band together be consistent be in cahoots be in league be of one be uniform with bunch bunch up cabal cement a union centralize check chime club club together coact coalesce cohere coincide collaborate collude combine come together concert concord concur confederate conform conform with consist with consociate consolidate conspire cooperate correspond couple do business with dovetail fall in together federalize federate fit together fuse gang gang up get heads together get together go in partners go in partnership go partners go together go with hang together harmonize hit hold together hook up hook up with interlock intersect jibe join join forces join fortunes with join in join together join up with join with keep together league league together lock make common cause marry match merge organize overlap pair pair off parallel partner play ball pull together put heads together reciprocate register register with respond to sing in chorus sort with square square with stand up with tally team up team up with team with throw in together throw in with tie in tie in with tie up tie up with unionize unite unite efforts unite with wed work together