| bravery(noun, drive, energy, spirit, resolve) |
| fortitude(noun, drive, energy, spirit, resolve) |
| invincibility |
| stamina(noun, spirit, determination, resolution, courage) |
| determination(noun, drive, spirit, resolve, resolution) |
| backbone(noun, drive, energy, spirit, resolve) |
| grit(noun, drive, energy, spirit, resolve) |
| mettle(noun, strength, spirit, determination, courage) |
| pluck(noun, drive, energy, spirit, resolve) |
| boldness(noun, drive, energy, spirit, resolve) |
| dauntlessness(noun, drive, strength, energy, spirit) |
| endurance(noun, perseverance) |
| energy(noun, drive, spirit, resolve, determination) |
| firmness(noun, drive, determination, resolution, steadfastness) |
| indefatigability(noun, resolution, perseverance) |
| moxie(noun, spirit, determination, resolution, courage) |
| persistence(noun, drive, energy, resolve, determination) |
| resolution(noun, drive, energy, spirit, resolve) |
| sand(noun, resolution, perseverance) |
| staunchness(noun, resolution) |