Other hyponyms of powerfulness include
effectiveness,
potency,
strength,
valence,
valency,
valence,
valency,
preponderance,
puissance,
persuasiveness,
strength,
irresistibility,
irresistibleness,
interest,
interestingness,
chokehold,
stranglehold,
sway,
influence,
repellant,
repellent,
control,
jurisdiction,
legal power,
disposal,
discretion,
free will,
veto,
effectiveness,
effectivity,
effectuality,
effectualness.