| Solution | Length | |
|---|---|---|
| 3 letters | ||
| rag | 3 | |
| 4 letters | ||
| wild | 4 | |
| rags | 4 | |
| iron | 4 | |
| rude | 4 | |
| hard | 4 | |
| rode | 4 | |
| 5 letters | ||
| cruel | 5 | |
| stiff | 5 | |
| stony | 5 | |
| 6 letters | ||
| savage | 6 | |
| brutal | 6 | |
| steely | 6 | |
| severe | 6 | |
| 7 letters | ||
| emperor | 7 | |
| bighair | 7 | |
| vicious | 7 | |
| untamed | 7 | |
| 8 letters | ||
| ruthless | 8 | |
| cruelest | 8 | |
| pitiless | 8 | |
| skewered | 8 | |
| 9 letters | ||
| skewering | 9 | |
| ferocious | 9 | |
| unsparing | 9 | |
| unfeeling | 9 | |
| 10 letters | ||
| unmerciful | 10 | |
| SANGUINARY | 10 | |
| inexorable | 10 | |
| UNYIELDING | 10 | |
| implacable | 10 | |
| relentless | 10 | |
| 11 letters | ||
| remorseless | 11 | |
| unrelenting | 11 | |
| unalterable | 11 | |
| terroristic | 11 | |
| unflinching | 11 | |
| uncivilized | 11 | |
| UNFORGIVING | 11 | |
| 12 letters | ||
| UNREMORSEFUL | 12 | |
| unappeasable | 12 | |
| 13 letters | ||
| unsympathetic | 13 | |
| 15 letters | ||
| uncompassionate | 15 | |