| Solution | Length | |
|---|---|---|
| 3 letters | ||
| lox | 3 | |
| 4 letters | ||
| fuel | 4 | |
| turf | 4 | |
| prop | 4 | |
| push | 4 | |
| 5 letters | ||
| nitro | 5 | |
| screw | 5 | |
| xenon | 5 | |
| rotor | 5 | |
| wheel | 5 | |
| 6 letters | ||
| thrust | 6 | |
| 7 letters | ||
| synfuel | 7 | |
| pushing | 7 | |
| cordite | 7 | |
| propane | 7 | |
| shoving | 7 | |
| 8 letters | ||
| stimulus | 8 | |
| stirring | 8 | |
| 9 letters | ||
| traveling | 9 | |
| squirtgun | 9 | |
| cartridge | 9 | |
| 10 letters | ||
| PROPELLING | 10 | |
| 11 letters | ||
| perchlorate | 11 | |
| 12 letters | ||
| TRANSITIONAL | 12 | |
| 17 letters | ||
| rocket propulsion | 17 | |