| ally oneself with(verb, join, group, cooperate, together) |
| amalgamate(verb, join, group, cooperate, together) |
| amass(verb, make, meet, increase, reduce) |
| assort(verb, act together) |
| bander(verb, join, group, cooperate, together) |
| bandy(verb, join, group, cooperate, together) |
| co-operate(verb, join, group, cooperate, together) |
| coalesce(verb, join, group, cooperate, together) |
| collude(verb, act together) |
| combinate(verb, join, group, cooperate, together) |
| communicate(verb, act together) |
| concentrate(verb, make, meet, draw, total) |
| condescend(verb, act together) |
| conglomerate |
| congress(verb, get, meet, increase, promote) |
| connect(verb, act together) |
| consociate(verb, join, group, cooperate, together) |
| consort(verb, act together) |
| conspire(verb, act together) |
| control(verb, act together) |