| Solution | Length | |
|---|---|---|
| 3 letters | ||
| set | 3 | |
| 4 letters | ||
| stop | 4 | |
| true | 4 | |
| snug | 4 | |
| sure | 4 | |
| stem | 4 | |
| 5 letters | ||
| solid | 5 | |
| stiff | 5 | |
| stout | 5 | |
| rocky | 5 | |
| rigid | 5 | |
| loyal | 5 | |
| sound | 5 | |
| tight | 5 | |
| 6 letters | ||
| stanch | 6 | |
| strong | 6 | |
| secure | 6 | |
| tested | 6 | |
| strict | 6 | |
| steely | 6 | |
| steady | 6 | |
| trusty | 6 | |
| stable | 6 | |
| sealed | 6 | |
| sturdy | 6 | |
| robust | 6 | |
| 7 letters | ||
| settled | 7 | |
| special | 7 | |
| 8 letters | ||
| reliable | 8 | |
| puristic | 8 | |
| surefire | 8 | |
| tireless | 8 | |
| trueblue | 8 | |
| resolute | 8 | |
| unshaken | 8 | |
| stalwart | 8 | |
| 9 letters | ||
| UNFAILING | 9 | |
| true-blue | 9 | |
| unbending | 9 | |
| rocksolid | 9 | |
| WINDPROOF | 9 | |
| tenacious | 9 | |
| steadfast | 9 | |
| religious | 9 | |
| 10 letters | ||
| UNSWERVING | 10 | |
| watertight | 10 | |
| UNYIELDING | 10 | |
| purposeful | 10 | |
| waterproof | 10 | |
| 11 letters | ||
| Sabbatarian | 11 | |
| straitlaced | 11 | |
| trustworthy | 11 | |
| UNFLAPPABLE | 11 | |
| SUBSTANTIAL | 11 | |
| puritanical | 11 | |
| predictable | 11 | |
| 12 letters | ||
| UNHESITATING | 12 | |
| 13 letters | ||
| well-grounded | 13 | |
| 14 letters | ||
| tried-and-true | 14 | |