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impugn

American  
[im-pyoon] / ɪmˈpjun /

verb (used with object)

  • impugns,
    present (3rd person singular)
  • impugned,
    past participle,  past
  • impugning
    present participle
  1. to challenge as false (another's statements, motives, etc.); cast doubt upon.

    Synonyms:
    censure, criticize, malign, asperse, attack
  2. Archaic. to assail (a person) by words or arguments; vilify.

  3. Obsolete. to attack (a person) physically.


impugn British  
/ ˌɪmpʌɡˈneɪʃən, ɪmˈpjuːn /

verb

  1. (tr) to challenge or attack as false; assail; criticize

"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

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Etymology

Origin of impugn

1325–75; Middle English impugnen < Middle French impugner < Latin impugnāre to attack, equivalent to im- im- 1 + pugnāre to fight, derivative of pugnus fist; see pugnacious

Explanation

To impugn means to call into question or attack as wrong. If your usually grumpy brother is suddenly nice and sweet, you'll impugn his motives if you're smart — he probably just wants something from you. The root of impugn is the Latin pugnare which means "to fight," so when you impugn, you are fighting or attacking, but by saying that something is false or wrong. If a candidate has a record that cannot be impugned, his or her opponent might go for a character attack. If you take pride in your work, you will be especially insulted if someone impugns your professionalism or integrity.

Keep Reading on Vocabulary.com

Vocabulary lists containing impugn

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.

See Examples For:

"These are grave assertions that directly impugn the claimants' personal integrity, character, and professional reputation", Lim said, adding that this was a factor in the awarding of the damages.

From BBC Jul. 14, 2026

In the latter, he said he did not impugn the jurors — who were not present — but was advising the just-acquitted defendant to stay out of trouble.

From Los Angeles Times May 1, 2026

Ms. Nuzzi will not dignify efforts to impugn her character with any future response,” Nuzzi’s lawyer Ari Wilkenfeld said in a statement.

From The Wall Street Journal Dec. 4, 2025

Not to impugn the integrity of anyone’s former travel agent, but that agent was probably less concerned than Google Flights with showing you the lowest possible price to get where you were heading.

From Slate Oct. 9, 2025

But none ever dared to impugn the correctness of her conduct.

From The Life and Letters of Mary Wollstonecraft Shelley, Volume II (of 2) by Florence A. Thomas Marshall

The rules of evidence are supposed to prohibit the presentation of “character evidence” — information that simply impugns a defendant or reveals past wrongs — to avoid biasing jurors.

From New York Times Mar. 30, 2022

We’ve learned a lot about women’s rights and the suffrage movement, and do we hear men saying that it shouldn’t be taught because it impugns men?

From Seattle Times Feb. 3, 2022

“For people to say we’re somehow manipulating the system — I do take offense, because that impugns my integrity as a system operator.”

From Los Angeles Times Jun. 9, 2020

He also said it “tacitly impugns the integrity” of judges to suggest that they could not meet performance standards.

From Salon Jul. 28, 2018

In these he impugns the honor of a distinguished contemporary, charging him with gross and impudent piracy of the results of another's labors.

From The Atlantic Monthly, Volume 18, No. 108, October, 1866 by Various

Humphrey, the Court said a prisoner named Roy Heck couldn’t seek monetary damages for what he claimed was an unconstitutional manslaughter conviction, without first getting it overturned or impugned in some way.

From The Wall Street Journal Mar. 23, 2026

“It would seem that because not only their reputations are being impugned, but they are central to this case—it would seem that an interview of these two prosecutors would be central.”

From Slate Oct. 9, 2024

Federal and state prosecutors have dropped or dismissed dozens of cases that relied on the impugned officers and the city now faces a federal civil rights lawsuit over the text messages.

From Los Angeles Times Aug. 18, 2023

Over the weekend, the committee said his "kangaroo court" comments had impugned the integrity of Parliament.

From BBC Jun. 11, 2023

People tend to get defensive when the integrity of their national sport is impugned.

From "Freakonomics: A Rogue Economist Explores the Hidden Side of Everything" by Steven D. Levitt

Such was the outcry that Ms. Oudéa-Castéra was obliged to apologize for impugning the performance of teachers.

From New York Times Jan. 16, 2024

She said plaintiffs could potentially go after companies for faulty or negligent designs that result in algorithms putting out damaging information, impugning reputation.

From Washington Times Apr. 13, 2023

It sometimes seems as if the participants in the debate are more concerned with impugning each others’ motives than addressing the genuine issues.

From Los Angeles Times Jan. 28, 2022

He suggested that Mr Johnson's behaviour was "impugning the reputations of Conservative MPs".

From BBC Jan. 11, 2022

American government officials, the press, and the public expressed their disappointment with the delays, many impugning the agency’s judgment and competence.

From "Hidden Figures" by Margot Lee Shetterly

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