| help out(expression, help, attack, do, aid) |
| hook on(expression, unite, cooperate, rally, merge) |
| hook up(expression, unite, cooperate, rally, merge) |
| hop to it(expression, idiom, help, attack, do) |
| imbue(verb, join, catch, interest, arrest) |
| immerse(verb, join, catch, interest, arrest) |
| indulge(verb, involve) |
| ingest(verb, take, receive, contribute, share) |
| interest(verb, join, catch, arrest, absorb) |
| interface(unite, cooperate, rally, merge, integrate) |
| interlace(verb, co-operate) |
| intermesh(verb, co-operate) |
| interplay(verb, co-operate) |
| intertwine(verb, co-operate) |
| interweave(verb, co-operate) |
| irregular |
| join together(expression, unite, cooperate, rally, merge) |
| join up with(expression, idiom, unite, cooperate, rally) |
| jump |
| jump in(expression, help, attack, do, aid) |