Synonym Chooser

How does the adjective untruthful differ from other similar words?

Some common synonyms of untruthful are deceitful, dishonest, and mendacious. While all these words mean "unworthy of trust or belief," untruthful stresses a discrepancy between what is said and fact or reality.

an untruthful account of their actions

When is deceitful a more appropriate choice than untruthful?

The words deceitful and untruthful are synonyms, but do differ in nuance. Specifically, deceitful usually implies an intent to mislead and commonly suggests a false appearance or double-dealing.

the secret affairs of a deceitful spouse

When would dishonest be a good substitute for untruthful?

While the synonyms dishonest and untruthful are close in meaning, dishonest implies a willful perversion of truth in order to deceive, cheat, or defraud.

a swindle usually involves two dishonest people

When might mendacious be a better fit than untruthful?

While in some cases nearly identical to untruthful, mendacious may suggest bland or even harmlessly mischievous deceit and when used of people often suggests a habit of telling untruths.

mendacious tales of adventure

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of untruthful However, Miranda, Assad, and Arroyo routinely failed in their obligations to cooperate with the investigation by delaying responses, refusing to provide certain information or documents, and providing inconsistent or untruthful responses. Chris Deubert, Forbes, 19 Nov. 2024 On Wednesday, the defense attacked Marquez’s credibility, questioning his motives for cooperating with the FBI and grilling him over episodes in his background that might paint him as untruthful. Megan Crepeau, Chicago Tribune, 13 Nov. 2024 What is more untruthful: A thing written down, or a sustained deception of the heart? Nicolette Polek, Harper's Magazine, 2 July 2024 President Donald Trump’s decision to withdraw the United States from the Paris climate agreement on June 1 was terribly misguided, and his justification for doing so was misleading and untruthful. Robert N. Stavins, Foreign Affairs, 5 June 2017 See All Example Sentences for untruthful
Recent Examples of Synonyms for untruthful
Adjective
  • It must also be said that, for all the lamenting of the Netherlands’ failure to win, West Germany — and Muller — were robbed of a clear goal in the second half due to an erroneous offside flag.
    Michael Cox, New York Times, 14 Sep. 2025
  • On Thursday, an erroneous report of a man with a gun sent two Boulder schools into lockdown.
    Seth Klamann, Denver Post, 12 Sep. 2025
Adjective
  • Trump has initiated a flurry of defamation lawsuits against media companies, accusing them of false or misleading coverage.
    Anniek Bao, CNBC, 16 Sep. 2025
  • In a recent interview with the Financial Times, Hinton challenged the optimistic visions promoted by Silicon Valley leaders, suggesting that much of the upbeat narrative about AI’s societal benefits is, at best, misleading.
    Tim Bajarin, Forbes.com, 16 Sep. 2025
Adjective
  • Apple had to claw back key features, including its (very funny but very inaccurate) text message and news app summaries.
    Allison Morrow, CNN Money, 10 Sep. 2025
  • The agent’s outputs could be inaccurate, irrelevant or even risky, negatively impacting ROI.
    Manosiz Bhattacharyya, Forbes.com, 8 Sep. 2025
Adjective
  • These are cheap, dishonest shots against a great intellect, acknowledged by friends and opponents alike.
    James Gaylord, Oc Register, 15 Sep. 2025
  • Industry groups insist that they are committed to weeding out dishonest companies that make false claims or sell dangerous products.
    Suzy Khimm, NBC news, 26 Aug. 2025
Adjective
  • This approach is unreliable because the proxy materials, like volcanic rock, might have been changed by geological processes or created long after the eggs were laid, resulting in incorrect age estimates.
    Mrigakshi Dixit, Interesting Engineering, 11 Sep. 2025
  • Poor labor management can also result in longer wait times, incorrect orders and ultimately negative reviews, directly impacting revenue.
    Jeff Kiesel, Forbes.com, 10 Sep. 2025
Adjective
  • At Comedy Central, Colbert rose to prominence playing a slightly exaggerated version of Bill O’Reilly and other unapologetically mendacious Fox News pundits from the George W. Bush years.
    Alan Sepinwall, Rolling Stone, 18 July 2025
  • The true story reveals both how freedom of speech first came to be conceived of as a mechanism for truth, an antidote to falsehood, and the foundation of all liberty—and that, ironically, this new and powerful theory was itself a deliberately mendacious fiction.
    Fara Dabhoiwala, Harpers Magazine, 4 June 2025
Adjective
  • Using the wrong type of cleaning product for your tub's material can result in scratches, discoloration, or chips.
    Ashlyn Needham, Southern Living, 14 Sep. 2025
  • Scotsman Robert MacIntyre was pleased to have made the cut with a birdie on the last on Friday evening but when a rare second cut was made to shorten the field for the final day, the 29-year-old from Oban was on the wrong side of the line when finishing 2 under par.
    Caoimhe O'Neill, New York Times, 14 Sep. 2025
Adjective
  • The false assurance was more than a slip.
    Eric Tucker, Twin Cities, 13 Sep. 2025
  • Robinson, the founder of the now-defunct anti-immigration English Defence League (EDL), was released from prison earlier this year, having been jailed for being in contempt of court by repeating false accusations about a Syrian refugee.
    Catherine Nicholls, CNN Money, 13 Sep. 2025

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Cite this Entry

“Untruthful.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/untruthful. Accessed 18 Sep. 2025.

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