| obduracy(noun, determination, perseverance, obstinacy, stubbornness) |
| obdurateness(noun, perseverance, obstinacy, stubbornness, rigor) |
| obstinacy(noun, drive, energy, resolve, determination) |
| patience(noun, perseverance) |
| pertinacity(noun, determination, perseverance, obstinacy, stubbornness) |
| pigheadedness(noun, determination, perseverance, obstinacy, stubbornness) |
| purpose(noun, drive, energy, resolve, determination) |
| purposefulness(noun, drive, energy, resolve, determination) |
| recalcitrance |
| relentlessness(noun, perseverance, obstinacy, stubbornness, rigor) |
| remorselessness(noun, perseverance, obstinacy, stubbornness, rigor) |
| resistance |
| resolve(noun, drive, energy, spirit, determination) |
| rigidity(noun, perseverance, obstinacy, stubbornness, rigor) |
| rigidness(noun, perseverance, obstinacy, stubbornness, rigor) |
| robustness |
| ruggedness |
| self-confidence(noun, drive, energy, resolve, determination) |
| single-mindedness(noun, drive, energy, resolve, determination) |
| spine(noun, drive, energy, resolve, determination) |