| Solution | Length | |
|---|---|---|
| 4 letters | ||
| ager | 4 | |
| sire | 4 | |
| spur | 4 | |
| 5 letters | ||
| spark | 5 | |
| yeast | 5 | |
| agent | 5 | |
| 6 letters | ||
| spedup | 6 | |
| incite | 6 | |
| enzyme | 6 | |
| 7 letters | ||
| oxidase | 7 | |
| reagent | 7 | |
| impetus | 7 | |
| 8 letters | ||
| alterant | 8 | |
| producer | 8 | |
| stimulus | 8 | |
| 9 letters | ||
| stimulant | 9 | |
| splitting | 9 | |
| initiator | 9 | |
| precursor | 9 | |
| activator | 9 | |
| 10 letters | ||
| ringleader | 10 | |
| PROPELLANT | 10 | |
| 11 letters | ||
| provocateur | 11 | |
| TRANSFORMER | 11 | |
| prime-mover | 11 | |
| seditionist | 11 | |
| 12 letters | ||
| troublemaker | 12 | |
| 13 letters | ||
| Rabble rouser | 13 | |