| Solution | Length | |
|---|---|---|
| 4 letters | ||
| slow | 4 | |
| dull | 4 | |
| 5 letters | ||
| thick | 5 | |
| heavy | 5 | |
| quiet | 5 | |
| still | 5 | |
| stoic | 5 | |
| brute | 5 | |
| prosy | 5 | |
| staid | 5 | |
| 6 letters | ||
| savage | 6 | |
| obtuse | 6 | |
| stupid | 6 | |
| stodgy | 6 | |
| bovine | 6 | |
| smooth | 6 | |
| stuffy | 6 | |
| waning | 6 | |
| steady | 6 | |
| 7 letters | ||
| stoical | 7 | |
| prosaic | 7 | |
| foolish | 7 | |
| deadpan | 7 | |
| restful | 7 | |
| unmoved | 7 | |
| DOLTISH | 7 | |
| 8 letters | ||
| mindless | 8 | |
| REPOSING | 8 | |
| secluded | 8 | |
| tranquil | 8 | |
| 9 letters | ||
| withdrawn | 9 | |
| senseless | 9 | |
| unruffled | 9 | |
| reposeful | 9 | |
| sheltered | 9 | |
| quiescent | 9 | |
| subsiding | 9 | |
| UNMINDFUL | 9 | |
| 10 letters | ||
| uninspired | 10 | |
| phlegmatic | 10 | |
| regardless | 10 | |
| UNINVOLVED | 10 | |
| unfanciful | 10 | |
| UNPOETICAL | 10 | |
| UNORIGINAL | 10 | |
| untroubled | 10 | |
| unromantic | 10 | |
| 11 letters | ||
| UNDISTURBED | 11 | |
| UNCONCERNED | 11 | |
| uninventive | 11 | |
| SEQUESTERED | 11 | |
| UNFLAPPABLE | 11 | |
| UNPERTURBED | 11 | |
| 12 letters | ||
| uninterested | 12 | |
| jolterheaded | 12 | |
| 13 letters | ||
| Thick-skinned | 13 | |
| unimaginative | 13 | |
| unintelligent | 13 | |
| uninquisitive | 13 | |
| thick-skulled | 13 | |