| Solution | Length | |
|---|---|---|
| 3 letters | ||
| tie | 3 | |
| 4 letters | ||
| tone | 4 | |
| iron | 4 | |
| 5 letters | ||
| rigor | 5 | |
| troth | 5 | |
| 6 letters | ||
| temper | 6 | |
| stasis | 6 | |
| torpor | 6 | |
| 7 letters | ||
| purpose | 7 | |
| resolve | 7 | |
| tension | 7 | |
| courage | 7 | |
| 8 letters | ||
| strength | 8 | |
| validity | 8 | |
| adamancy | 8 | |
| security | 8 | |
| standing | 8 | |
| solidity | 8 | |
| tenacity | 8 | |
| rigidity | 8 | |
| 9 letters | ||
| thickness | 9 | |
| TOUGHNESS | 9 | |
| true-blue | 9 | |
| TIGHTNESS | 9 | |
| viscosity | 9 | |
| stiffness | 9 | |
| substance | 9 | |
| stability | 9 | |
| RENITENCY | 9 | |
| SOUNDNESS | 9 | |
| SOLIDNESS | 9 | |
| 10 letters | ||
| sang froid | 10 | |
| sturdiness | 10 | |
| QUIESCENCE | 10 | |
| solidarity | 10 | |
| separation | 10 | |
| resolution | 10 | |
| uniformity | 10 | |
| 11 letters | ||
| RELIABILITY | 11 | |
| TANGIBILITY | 11 | |
| 12 letters | ||
| steady state | 12 | |
| stubbornness | 12 | |
| 13 letters | ||
| determination | 13 | |
| 14 letters | ||
| substantiality | 14 | |
| relentlessness | 14 | |
| predictability | 14 | |
| 16 letters | ||
| SPECIFIC GRAVITY | 16 | |