What is the meaning of powerful?

adjective

• Having great power or force or potency or effect.
  • usage: "the most powerful government in western Europe"; "his powerful arms"; "a powerful bomb"; "the horse's powerful kick"; "powerful drugs"; "a powerful argument"
• Strong enough to knock down or overwhelm.
  • usage: "a knock-down blow"
  • synonyms: knock-down
• Having great influence.
  • synonyms: potent
• Of a person. ( possessing physical strength and weight; rugged and powerful)
  • usage: "a hefty athlete"; "a muscular boxer"; "powerful arms"
  • synonyms: brawny, hefty, muscular, sinewy
• Displaying superhuman strength or power.
  • usage: "herculean exertions"
  • synonyms: herculean

adverb

• Southern regional intensive. ( very; to a great degree)
  • usage: "the baby is mighty cute"; "he's mighty tired"; "it is powerful humid"; "that boy is powerful big now"; "they have a right nice place"; "they rejoiced mightily"
  • synonyms: mighty, mightily, right