Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Having or capable of exerting power.
  • adj. Effective or potent: a powerful drug.
  • adj. Chiefly Upper Southern U.S. Great: "[Everybody had] a powerful lot to say about faith and good works and free grace and preforeordestination, and I don't know what all” ( Mark Twain).
  • adv. Chiefly Upper Southern U.S. Very: It was powerful humid.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Having, or capable of exerting power, potency or influence.
  • adj. Large; capacious; said of veins of ore.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Full of power; capable of producing great effects of any kind; potent; mighty; efficacious; intense
  • adj. Large; capacious; -- said of veins of ore.

from The Century Dictionary and Cyclopedia

  • Exerting great force or power; able to produce great physical effects; strong; efficient: as, a powerful engine; a powerful blow; a powerful medicine.
  • Having great authority; puissant; potent; mighty: as, a powerful nation.
  • Characterized by great intellectual power.
  • Having great influence or moral power; cogent; efficacious.
  • Great; numerous; numerically large. Compare power, 10.
  • Synonyms Puissant, forcible, cogent, influential; vigorous, robust, sturdy.
  • Very: as, powerful good; powerful weak.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. having great power or force or potency or effect
  • adj. strong enough to knock down or overwhelm
  • adj. having great influence
  • adj. (of a person) possessing physical strength and weight; rugged and powerful
  • adj. displaying superhuman strength or power
  • adv. (Southern regional intensive) very; to a great degree

Etymologies

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Examples

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