| requirement(noun, drive, power, strength, energy) |
| sapience(noun, drive, power, strength, energy) |
| sinew(noun, power, strength, energy, vigor) |
| sock(noun, power, strength, energy, vigor) |
| speed(noun, power, strength, energy, vigor) |
| steam(noun, power, strength, energy, vigor) |
| stimulus(noun, power, strength, energy, vigor) |
| strain(noun, power, strength, energy, vigor) |
| strength(noun, power, energy, vigor, might) |
| strong arm(noun, expression, power, strength, energy) |
| stuff(noun, power, strength, energy, vigor) |
| subjection(noun, power, strength, energy, vigor) |
| tension(noun, power, strength, energy, vigor) |
| trouble(noun, power, strength, energy, vigor) |
| validity(noun, power, strength, energy, vigor) |
| validness(noun, drive, power, strength, energy) |
| vehemence(noun, drive, power, strength, energy) |
| velocity(noun, power, strength, energy, vigor) |
| vigor(noun, power, strength, energy, might) |
| what it takes(noun, expression, idiom, power, strength) |