| resoluteness(noun, support, control, strength, spirit) |
| security(noun, support, control, strength, balance) |
| sedulity(noun, temper, determination, resolution, composure) |
| self-absorption |
| sincerity(noun, spirit, determination, firmness, decision) |
| soundness(noun, support, control, strength, balance) |
| spirit(noun, determination, firmness, decision, settlement) |
| spunk(noun, spirit, determination, resolution, firmness) |
| stableness(noun, support, control, strength, balance) |
| stamina(noun, determination, resolution, endurance, persistence) |
| standing |
| staunchness(noun, spirit, determination, resolution, firmness) |
| staying power(noun, expression, spirit, determination, firmness) |
| stick-to-itiveness(noun, temper, determination, resolution, composure) |
| straight face |
| strength(noun, support, control, balance, firmness) |
| strong will(noun, expression, spirit, determination, resolution) |
| sturdiness(noun, support, control, strength, balance) |
| substantiality(noun, support, control, strength, balance) |
| support(noun, control, strength, balance, firmness) |