| seriousness(noun, resolve, determination, resolution, firmness) |
| settlement(noun, spirit, determination, decision, verdict) |
| sincerity(noun, spirit, determination, firmness, decision) |
| stalwartness(noun, firmness, bravery) |
| stick-to-it-iveness |
| stoutness(firmness, bravery, stalwartness) |
| strong |
| valor(noun, drive, strength, energy, resolve) |
| vigor(strength, resolution, confidence, firmness, bravery) |
| willpower(noun, strong, drive, energy, spirit) |
| élan(noun, spirit, determination, assurance, certainty) |
| adherence(noun, support, control, strength, balance) |
| aim(noun, spirit, determination, firmness, decision) |
| application(noun, resolve, determination, firmness, persistence) |
| assurance(noun, support, control, drive, strength) |
| balance(noun, support, control, strength, firmness) |
| bottle |
| braveness(noun, strength, determination, courage, firmness) |
| bullheadedness |
| certainty(noun, drive, energy, spirit, resolve) |