| interrelate(verb, join, concern, link, connect) |
| intimate(noun, associate, companion, friend, buddy) |
| join forces with(verb, join, group, cooperate, together) |
| join hands(verb, join, group, cooperate, together) |
| line up with(verb, join, group, cooperate, together) |
| partisan(noun, advocate, companion, friend, follower) |
| partner in crime |
| peer(noun, companion, friend, partner, fellow) |
| piece(verb, join, group, cooperate, together) |
| playmate(noun, guide, associate, companion, friend) |
| put together(verb, phrasal verb, action, act, bind) |
| rally(verb, join, group, cooperate, together) |
| rally round(verb, join, group, cooperate, together) |
| rally up(verb, join, group, cooperate, together) |
| reciprocate(verb, co-operate) |
| roommate(noun, associate, companion, friend, comrade) |
| schoolmate(noun, associate, companion, friend, comrade) |
| sister(noun, friend) |
| solder(verb, join, group, cooperate, together) |
| solidarize(verb, join, group, cooperate, together) |