| patience(noun, strength, determination, courage, firmness) |
| persistence(noun, resolve, determination, firmness, obstinacy) |
| pertinacity(noun, resolve, determination, firmness, persistence) |
| resoluteness(noun, strength, resolve, determination, courage) |
| resolution(noun, strength, spirit, resolve, determination) |
| resolve(noun, determination, firmness, persistence, obstinacy) |
| sand |
| spine(noun, strength, determination, courage, firmness) |
| starch(noun, strength, resolve, determination, courage) |
| staunchness(noun, resolve, determination, firmness, persistence) |
| staying power(noun, expression, strength, determination, firmness) |
| steadfastness(noun, resolve, determination, firmness, persistence) |
| stick-to-itiveness(noun, strength, resolve, determination, courage) |
| stomach(noun, strength, resolve, determination, courage) |
| stoutheartedness(noun, strength, determination, courage, firmness) |
| strength of purpose(noun, expression, idiom, resolve, determination) |
| valiancy(noun, strength, determination, courage, firmness) |
| valor(noun, strength, determination, courage, firmness) |
| valorousness(noun, strength, determination, courage, firmness) |
| what it takes(noun, expression, idiom, strength, resolve) |