| extortion(noun, power, strength, energy, vigor) |
| fierceness(noun, drive, power, strength, energy) |
| forcefulness(noun, power, strength, energy, vigor) |
| full head of steam(noun, expression, idiom, power, strength) |
| fury(noun, power, strength, energy, vigor) |
| grasp(noun, understanding, mind, intelligence, balance) |
| grey matter |
| guts(noun, drive, power, strength, energy) |
| horsepower(noun, power, strength, energy, vigor) |
| impact(noun, power, strength, energy, vigor) |
| impetus(noun, power, strength, energy, vigor) |
| impressiveness(noun, drive, power, strength, energy) |
| impulse(noun, power, strength, energy, vigor) |
| incisiveness(noun, wisdom, discrimination, prudence, discernment) |
| influence(noun, power, strength, energy, vigor) |
| ingenuity(noun, understanding, mind, intelligence, balance) |
| insightfulness(understanding, wisdom, perceptiveness) |
| intensity(noun, drive, power, strength, energy) |
| intestinal fortitude(noun, expression, drive, power, strength) |
| judicious |