| rigidity(noun, feature, ability, attribute) |
| rigor(noun, feature, ability, attribute) |
| rigour(noun, feature, ability, attribute) |
| roughness(noun, feature, ability, attribute) |
| severity(noun, feature, ability, attribute) |
| slothfulness(noun, feature, ability, attribute) |
| solidity(noun, feature, ability, attribute) |
| soundness(noun, feature, ability, attribute) |
| stability(noun, feature, ability, attribute) |
| stableness(noun, feature, ability, attribute) |
| steadfastness(noun, feature, ability, attribute) |
| steadiness(noun, feature, ability, attribute) |
| sternness(noun, feature, ability, attribute) |
| stoutness(noun, feature, ability, attribute) |
| strength(noun, feature, ability, attribute) |
| strictness(noun, feature, ability, attribute) |
| stringency(noun, feature, ability, attribute) |
| stubbornness(noun, feature, ability, attribute) |
| stupidity(noun, feature, ability, attribute) |
| tenacity(noun, feature, ability, attribute) |