1. (adj) powerful
having great power or force or potency or effect
Synonyms: herculean, hefty, knock-down(a), potent, muscular, brawny, sinewy
Antonyms: weak, low-powered, helpless, powerless, feeble, uninfluential, nerveless, incapacitated, subhuman
2. (adj) knock-down(a), powerful
strong enough to knock down or overwhelm
Antonyms: nerveless, feeble, uninfluential, helpless, weak, subhuman, powerless, incapacitated, low-powered
3. (adj) potent, powerful
having great influence
Synonyms: muscular, potent, hefty, stiff, brawny, herculean, virile, sinewy, powerful, strong, knock-down(a)
Antonyms: subhuman, low-powered, powerless, feeble, weak, uninfluential, nerveless, helpless, incapacitated
4. (adj) brawny, hefty, muscular, powerful, sinewy
(of a person) possessing physical strength and weight; rugged and powerful
Synonyms: brawny, potent, powerful, unchewable, sizable, sizeable, stringy, hefty, fibrous, healthy, mesomorphic, tendinous, respectable, sinewy, knock-down(a), goodly, goodish, herculean, muscular, tidy
Antonyms: feeble, weak, uninfluential, subhuman, incapacitated, helpless, nerveless, powerless, low-powered
5. (adverb) herculean, powerful
displaying superhuman strength or power
Synonyms: potent, muscular, hefty, brawny, herculean, sinewy, powerful, knock-down(a)
Antonyms: weak, incapacitated, powerless, feeble, nerveless, helpless, subhuman, uninfluential, low-powered
6. (adverb) mighty, mightily, powerful, right
(Southern regional intensive) very; to a great degree
Synonyms: properly, the right way, correctly, in good order, decently, justly, flop, right, mighty, mightily, powerful, right on, aright, decent
Antonyms: incapacitated, uninfluential, nerveless, powerless, weak, feeble, low-powered, subhuman, helpless
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Synonyms and Antonyms of powerful 
