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Synonyms

powerful

American  
[pou-er-fuhl] / ˈpaʊ ər fəl /

adjective

  1. having or exerting great power or force.

    Synonyms:
    strong , forceful
    Antonyms:
    weak
  2. physically strong, as a person.

    a large, powerful athlete.

  3. producing great physical effects, as a machine or a blow.

  4. potent; efficacious.

    a powerful drug.

  5. having great effectiveness, as a speech, speaker, description, reason, etc.

    Synonyms:
    effective , cogent , forcible , convincing , influential
  6. having great power, authority, or influence; mighty.

    a powerful nation.

  7. Chiefly South Midland and Southern U.S.  great in number or amount.

    a powerful lot of money.


powerful British  
/ ˈpaʊəfʊl /

adjective

  1. having great power, force, potency, or effect

  2. extremely effective or efficient in action

    a powerful drug

    a powerful lens

  3. dialect  large or great

    a powerful amount of trouble

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

adverb

  1. dialect  extremely; very

    he ran powerful fast

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Related Words

Powerful, mighty, potent suggest great force or strength. Powerful suggests capability of exerting great force or overcoming strong resistance: a powerful machine like a bulldozer. Mighty, now chiefly rhetorical, implies uncommon or overwhelming strength of power: a mighty army. Potent implies great natural or inherent power: a potent influence.

Other Word Forms

  • overpowerful adjective
  • overpowerfully adverb
  • overpowerfulness noun
  • powerfully adverb
  • powerfulness noun
  • quasi-powerful adjective
  • quasi-powerfully adverb
  • superpowerful adjective
  • ultrapowerful adjective
  • unpowerful adjective

Etymology

Origin of powerful

First recorded in 1350–1400, powerful is from the Middle English word powarfull. See power, -ful

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The bears have won out on Oracle’s stock lately, but one analyst thinks the powerful recent selloff just means more opportunity for buyers.

From MarketWatch

DraftKings CEO Jason Robins said on an earnings call last month that he thinks prediction markets will be a “powerful lever” to pressure states to legalize online sports betting.

From Barron's

Lenacapavir, taken twice a year, has been shown to reduce the risk of HIV transmission by more than 99.9 percent, making it functionally akin to a powerful vaccine.

From Barron's

The most powerful solar storm ever recorded was the Carrington Event in 1859, which knocked out telegraph lines across the globe.

From BBC

"Together, they form a powerful cycle where outrage sparks engagement, algorithms amplify it, and constant exposure leaves us mentally exhausted," he said.

From BBC