| Solution | Length | |
|---|---|---|
| 4 letters | ||
| grim | 4 | |
| dour | 4 | |
| 5 letters | ||
| stern | 5 | |
| SOBER | 5 | |
| sorry | 5 | |
| staid | 5 | |
| 6 letters | ||
| solemn | 6 | |
| severe | 6 | |
| SEDATE | 6 | |
| somber | 6 | |
| 7 letters | ||
| unhappy | 7 | |
| serious | 7 | |
| weighty | 7 | |
| 8 letters | ||
| straight | 8 | |
| wretched | 8 | |
| 10 letters | ||
| uncheerful | 10 | |
| thoughtful | 10 | |
| 11 letters | ||
| stone-faced | 11 | |
| 14 letters | ||
| straight-faced | 14 | |