| be a participant(play, participate, interfere) |
| be involved(play, participate, interfere) |
| follow suit(verb, imitate) |
| chip in(expression, play, participate, interfere) |
| come in(expression, play, participate, interfere) |
| compete(play, participate, interfere) |
| concur(play, participate, interfere) |
| cooperate(play, participate, interfere) |
| engage(play, participate, interfere) |
| engage in(expression, play, participate, interfere) |
| enter into(expression, play, participate, interfere) |
| follow in the footsteps of(verb, expression, idiom, phrasal verb) |
| get in on(expression, idiom, play, participate, interfere) |
| get in on the act(expression, idiom, play, participate, interfere) |
| go into(expression, play, participate, interfere) |
| have a hand in(expression, idiom, play, participate, interfere) |
| sit in on(expression, idiom, play, participate, interfere) |
| aid(play, participate, interfere) |
| be a party to(play, participate, interfere) |
| be included(play, participate, interfere) |