| prolonging(noun, determination, resolution, endurance, persistence) |
| purposiveness(noun, spirit, resolve, determination, resolution) |
| pursuance(noun, determination, resolution, endurance, persistence) |
| recalcitrance(noun, stubbornness, willfulness) |
| regularity(noun, honor, perseverance, reliability, faithfulness) |
| reluctance(noun, determination, purpose, obstinacy, stubbornness) |
| remorselessness(perseverance, obstinacy, stubbornness, inflexibility, rigor) |
| rigidness(perseverance, obstinacy, stubbornness, inflexibility, rigor) |
| sedulity(noun, care, determination, resolution, endurance) |
| sedulousness |
| seriousness(noun, resolve, determination, resolution, firmness) |
| sincerity(noun, spirit, determination, firmness, intensity) |
| spine(noun, drive, energy, resolve, determination) |
| starch(noun, strength, energy, resolve, determination) |
| steadiness(noun, perseverance, reliability, faithfulness, steadfastness) |
| stick-to-itiveness(noun, resolve, determination, resolution, firmness) |
| stiff upper lip(noun, expression, idiom, drive, energy) |
| stomach(noun, resolve, determination, firmness, persistence) |
| strength of purpose(noun, expression, idiom, resolve, determination) |
| surety(noun, honor, resolve, firmness, perseverance) |