| spine(noun, drive, energy, resolve, determination) |
| spunk(noun, drive, energy, resolve, determination) |
| steadfastness(noun, drive, energy, resolve, determination) |
| steady on |
| step up |
| stoical(adjective, calm, cool, steady, tranquil) |
| stubbornness(noun, drive, energy, resolve, determination) |
| tenacity(noun, drive, energy, resolve, determination) |
| thick-skinned(adjective, calm, cool, steady, tranquil) |
| unaffected(adjective, calm, cool, steady, tranquil) |
| undisturbed(adjective, calm, cool, steady, tranquil) |
| unexcitable(adjective, calm, cool, steady, unaffected) |
| unflappable(adjective, calm, cool, steady, unaffected) |
| unmoved(adjective, calm, cool, steady, unaffected) |
| untouched(adjective, calm, cool, steady, tranquil) |
| valor(noun, drive, energy, resolve, determination) |
| willpower(noun, drive, energy, resolve, determination) |
| calm(adjective, cool, steady, collected, unflappable) |
| collected(adjective, calm, cool, steady, unaffected) |
| confidence(noun, drive, determination, resolution, steadfastness) |