| Solution | Length | |
|---|---|---|
| 3 letters | ||
| bis | 3 | |
| wax | 3 | |
| 4 letters | ||
| sire | 4 | |
| teem | 4 | |
| rise | 4 | |
| rain | 4 | |
| 5 letters | ||
| lugar | 5 | |
| widen | 5 | |
| terse | 5 | |
| swell | 5 | |
| 6 letters | ||
| abound | 6 | |
| spread | 6 | |
| shower | 6 | |
| growth | 6 | |
| stream | 6 | |
| 7 letters | ||
| clutter | 7 | |
| 8 letters | ||
| WIDENING | 8 | |
| snowball | 8 | |
| run over | 8 | |
| shoot up | 8 | |
| multiply | 8 | |
| 9 letters | ||
| pullulate | 9 | |
| reproduce | 9 | |
| arms race | 9 | |
| propagate | 9 | |
| procreate | 9 | |
| 10 letters | ||
| strengthen | 10 | |
| swarm with | 10 | |