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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.

Instead, the galaxy's core could be dominated by an enormous concentration of dark matter that produces the same powerful gravitational effects.

From Science Daily

Scientists now believe the conditions Voyager 2 encountered at Uranus may have resembled the powerful solar driven events sometimes seen near Earth.

From Science Daily

The latest release of Epstein files by the US government - which include millions of documents - include the names of rich and powerful people from around the world.

From BBC

A powerful jet stream has been sending areas of low pressure in from the Atlantic, arriving first across the south-west of England.

From BBC

“The capital of the most powerful nation on earth appears to be without a vital, fully functioning newspaper to cover it,” columnist Peggy Noonan lamented in the Wall Street Journal.

From Salon