| Solution | Length | |
|---|---|---|
| 4 letters | ||
| firm | 4 | |
| sure | 4 | |
| true | 4 | |
| real | 4 | |
| safe | 4 | |
| 5 letters | ||
| truer | 5 | |
| loyal | 5 | |
| sound | 5 | |
| tried | 5 | |
| solid | 5 | |
| 6 letters | ||
| steady | 6 | |
| trusty | 6 | |
| liable | 6 | |
| stable | 6 | |
| proven | 6 | |
| honest | 6 | |
| secure | 6 | |
| tested | 6 | |
| strong | 6 | |
| 7 letters | ||
| upright | 7 | |
| private | 7 | |
| staunch | 7 | |
| genuine | 7 | |
| tenable | 7 | |
| uniform | 7 | |
| 8 letters | ||
| reliable | 8 | |
| faithful | 8 | |
| credible | 8 | |
| straight | 8 | |
| probable | 8 | |
| truthful | 8 | |
| surefire | 8 | |
| virtuous | 8 | |
| 9 letters | ||
| steadfast | 9 | |
| righteous | 9 | |
| reputable | 9 | |
| UNFAILING | 9 | |
| 10 letters | ||
| BELIEVABLE | 10 | |
| confidence | 10 | |
| DEPENDABLE | 10 | |
| aboveboard | 10 | |
| 11 letters | ||
| responsible | 11 | |
| SUBSTANTIAL | 11 | |
| predictable | 11 | |
| 13 letters | ||
| well-grounded | 13 | |
| unimpeachable | 13 | |
| 14 letters | ||
| tried-and-true | 14 | |
| UNQUESTIONABLE | 14 | |
| 15 letters | ||
| unexceptionable | 15 | |