| validity(noun, force, end, drive, power) |
| force(noun, drive, power, strength, energy) |
| cogency(noun, end, drive, power, strength) |
| legality(noun, strength, substance, genuineness, rationality) |
| point(noun, force, drive, power, strength) |
| punch(noun, force, end, drive, power) |
| authority(noun, drive, power, strength, energy) |
| believability(noun, reliability, validity, credibility, verisimilitude) |
| creditability(noun, reliability, validity, credibility, verisimilitude) |
| drive(noun, power, strength, energy, authority) |
| duress(noun, drive, power, strength, energy) |
| effect(noun, power, strength, energy, influence) |
| effective |
| effectiveness(noun, force, end, drive, power) |
| effectual |
| efficacy(noun, power, strength, energy, influence) |
| efficient |
| effort(noun, power, strength, energy, vigor) |
| energy(noun, drive, power, strength, authority) |
| forcefulness(noun, force, drive, power, strength) |