| Solution | Length | |
|---|---|---|
| 3 letters | ||
| wax | 3 | |
| fan | 3 | |
| 4 letters | ||
| rise | 4 | |
| sour | 4 | |
| step | 4 | |
| whet | 4 | |
| pump | 4 | |
| 5 letters | ||
| revup | 5 | |
| ripen | 5 | |
| ampup | 5 | |
| widen | 5 | |
| exalt | 5 | |
| raise | 5 | |
| swell | 5 | |
| 6 letters | ||
| heatup | 6 | |
| boilup | 6 | |
| RAMPUP | 6 | |
| irrupt | 6 | |
| stepup | 6 | |
| worsen | 6 | |
| deepen | 6 | |
| spread | 6 | |
| ramify | 6 | |
| triple | 6 | |
| 7 letters | ||
| augment | 7 | |
| flareup | 7 | |
| sharpen | 7 | |
| provoke | 7 | |
| magnify | 7 | |
| enhance | 7 | |
| 8 letters | ||
| step up | 8 | |
| soup up | 8 | |
| redouble | 8 | |
| heighten | 8 | |
| compound | 8 | |
| escalate | 8 | |
| shoot up | 8 | |
| snowball | 8 | |
| 9 letters | ||
| reinforce | 9 | |
| 10 letters | ||
| strengthen | 10 | |
| exasperate | 10 | |
| accentuate | 10 | |
| 11 letters | ||
| proliferate | 11 | |