Definition of untruthfulnext

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 King suggested the defense attorney was being untruthful. Darcie Moran, Freep.com, 13 Nov. 2025 Officers making contact with Hyatt noted an odor of intoxicants, staggering gait, confusion and illogical, untruthful responses to questions, according to the motion. Arkansas Online, 18 Aug. 2025 The deficient vice of integrity is being fake, untruthful, inconsistent, unprincipled, and manipulative. Mary Crossan, Forbes.com, 17 July 2025 During the trial, prosecutors showed videos of the multiple interviews Troconis had with law enforcement and accused her of being untruthful about Farber Dulos’ disappearance. Justin Muszynski, Hartford Courant, 21 Apr. 2025 See All Example Sentences for untruthful
Recent Examples of Synonyms for untruthful
Adjective
  • That’s an extra $1,780 or so purely because the IRS concluded the erroneous position was intentional rather than mistaken.
    Kelly Phillips Erb, Forbes.com, 26 Jan. 2026
  • How to opt out Incorporating AI directly into Gmail could pose risks for Google, given that large language models can sometimes present erroneous or misleading information.
    Julia Doyle, CBS News, 8 Jan. 2026
Adjective
  • Behind the scenes, Newsom’s staff have taken a similar approach and tone, calling for the tabloid to change language in stories that the team feels is inaccurate or misleading.
    Max Tani, semafor.com, 2 Feb. 2026
  • An administration official would make a claim about what happened, and later evidence would find these contentions to be misleading.
    Clarence Page, Chicago Tribune, 1 Feb. 2026
Adjective
  • In the 222 years since declaring its independence, the Caribbean country and its people has consistently found itself as the target of American derision—from Thomas Jefferson’s refusal to acknowledge Haiti's independence to Trump’s inaccurate depiction of Haitians.
    Ruth Jean-Marie, Time, 3 Feb. 2026
  • Behind the scenes, Newsom’s staff have taken a similar approach and tone, calling for the tabloid to change language in stories that the team feels is inaccurate or misleading.
    Max Tani, semafor.com, 2 Feb. 2026
Adjective
  • Erdoğan mocked these initiatives and described them as dishonest.
    Kaya Genç, The Dial, 3 Feb. 2026
  • Even Americans who have grown habituated to Trump’s excesses have been shaken by these killings and the reflexively cruel and dishonest response from the administration.
    Hillary Rodham Clinton, The Atlantic, 29 Jan. 2026
Adjective
  • Conversely, the state Attorney General's office believes applying the anti-nepotism law in this situation would be an incorrect and overly broad interpretation.
    David Bauerlein, Florida Times-Union, 4 Feb. 2026
  • The state’s attorneys said that too was incorrect.
    Los Angeles Times, Los Angeles Times, 4 Feb. 2026
Adjective
  • Supporters of recent state AI regulations said the measures will address potential threats to public safety and personal privacy, and to counter any mendacious actions created by AI, while not hindering innovation.
    Hope Moses, Chicago Tribune, 10 Jan. 2026
  • In the dry California hills, an intentional community tries to build a pyre for one of its own, and, in the complex and mendacious aftermath, may end up sort of burning down the nation-state.
    Helen Shaw, New Yorker, 14 Dec. 2025
Adjective
  • Nichols and Vann concede that handing the cup with the apple juice and urine mix to Smith’s son to drink was wrong and Vann has expressed regret for that.
    Jane Harper, Dallas Morning News, 7 Feb. 2026
  • The crash involved a wrong-way driver on eastbound I-84, according to an Idaho State Police Facebook post.
    Shannon Tyler, Idaho Statesman, 7 Feb. 2026
Adjective
  • The racist imagery is strategically embedded within a larger narrative promoting false election fraud conspiracy theories, designed to dehumanize Black and brown voters as threats to democracy and to justify restricting their participation in elections.
    Los Angeles Times, Los Angeles Times, 6 Feb. 2026
  • The Iranian shadow fleet consists of tankers and associated companies that operate outside normal commercial channels, often using false identities, ship-to-ship transfers, and deceptive documentation to hide Iranian crude and refined products.
    Claire Carter, The Washington Examiner, 6 Feb. 2026

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Cite this Entry

“Untruthful.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/untruthful. Accessed 9 Feb. 2026.

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