Noun powerfulness has 1 sense
  1. power, powerfulness - possession of controlling influence; "the deterrent power of nuclear weapons"; "the power of his love saved her"; "his powerfulness was concealed by a gentle facade"
    --1 is a kind of quality
    Antonyms: powerlessness, impotence, impotency
    --1 has particulars:
     potency, effectiveness, strength; valence, valency; valence, valency; preponderance; puissance; persuasiveness, strength; irresistibility, irresistibleness; interest, interestingness; stranglehold, chokehold, throttlehold; sway; influence; repellent, repellant; control; legal power, jurisdiction; disposal; free will, discretion; veto; reins; effectiveness, effectivity, effectualness, effectuality