| obstinacy(noun, resolve, determination, firmness, stubbornness) |
| persistence(noun, resolve, determination, firmness, obstinacy) |
| pertinacity(noun, resolve, determination, firmness, persistence) |
| pith |
| pluck |
| resoluteness(noun, resolve, determination, firmness, persistence) |
| resolution(noun, resolve, determination, firmness, persistence) |
| resolve(noun, determination, firmness, persistence, obstinacy) |
| spirit |
| stamina |
| starch(noun, resolve, determination, firmness, persistence) |
| staunchness(noun, resolve, determination, firmness, persistence) |
| steadfastness(noun, resolve, determination, firmness, persistence) |
| stick-to-itiveness(noun, resolve, determination, firmness, persistence) |
| stomach(noun, resolve, determination, firmness, persistence) |
| strength of purpose(noun, expression, idiom, resolve, determination) |
| tenacity(noun, resolve, firmness, obstinacy, stubbornness) |
| toughness |
| true grit(noun, expression, resolve, determination, firmness) |
| what it takes(noun, expression, idiom, resolve, determination) |