| fill(verb, overrun, flood, penetrate, steep) |
| filter in(expression, crack, enter, drill, pierce) |
| foist in(verb, phrasal verb, interposition) |
| gain entrée(expression, come, introduce, penetrate, arrive) |
| get in(expression, crack, enter, breach, come) |
| go in(verb, expression, phrasal verb, enter, breach) |
| horn in(expression, come, introduce, penetrate, arrive) |
| immigrate(verb, finish, come, introduce, penetrate) |
| inculcate(verb, teaching) |
| indoctrinate(verb, teaching) |
| infect(verb, ruin, spoil, fill, overrun) |
| infiltration |
| infringe |
| ingress(verb, crack, enter, breach, come) |
| interject(verb, inspire, throw, introduce, impart) |
| jump in(expression, come, introduce, penetrate, arrive) |
| macerate |
| make an entrance(verb, expression, idiom, crack, enter) |
| make way(expression, come, introduce, penetrate, arrive) |
| marinate |