| motivation(noun, force, quality, character, strength) |
| oomph(noun, force, quality, character, strength) |
| outlook(noun, force, quality, character, strength) |
| patience(noun, strength, determination, courage, firmness) |
| pith(noun, strength, determination, courage, firmness) |
| psyche(noun, force, quality, character, strength) |
| pugnacity(noun, spirit, dash, courage, nerve) |
| rashness(noun, spirit, dash, courage, nerve) |
| recklessness(noun, spirit, dash, courage, nerve) |
| resoluteness(noun, strength, determination, courage, firmness) |
| resolve(noun, force, quality, character, strength) |
| sparkle(noun, force, quality, character, strength) |
| spine(noun, strength, determination, courage, firmness) |
| staying power(expression, strength, determination, courage, firmness) |
| stick-to-itiveness(noun, strength, determination, courage, firmness) |
| stomach(noun, strength, determination, courage, firmness) |
| strength(noun, character, courage, firmness, will) |
| substance(noun, force, quality, character, strength) |
| temper(noun, force, quality, character, strength) |
| temperament(noun, force, quality, character, strength) |