| kidney(spirit, determination, courage) |
| liveliness(noun, force, quality, drive, character) |
| lustiness(strength, energy, vivacity) |
| marrow(noun, strength, effect, subject, emotion) |
| masculinity |
| nip(noun, hint, suggestion, trace, sharpness) |
| overconfidence(noun, informal, face, rudeness, assurance) |
| parts |
| pertinacity(noun, strength, ability, resolve, determination) |
| potency(noun, power, strength, energy, vigor) |
| prowess(noun, spirit, dash, informal, determination) |
| purposefulness(noun, drive, energy, spirit, resolve) |
| push(noun, drive, power, strength, energy) |
| raciness |
| relish(noun, excitement, interest, hint, suggestion) |
| resource |
| ruggedness |
| sauciness(noun, informal, face, confidence, assurance) |
| sense(noun, strength, effect, subject, meaning) |
| sinew(noun, power, strength, energy, vigor) |