UNTRUTHFUL Synonyms: 95 Similar and Opposite Words

Q: 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

Q: 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

Q: 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

Q: 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

untruthful

adjective

ˌən-ˈtrüth-fəl

Definition of untruthful

as in erroneous

not being in agreement with what is true an unintentionally untruthful statement that the candidate later corrected

Synonyms & Similar Words

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Antonyms & Near Antonyms

as in misleading

telling or containing lies the political action committee was slammed for spreading untruthful smears about the candidate and his wife

Synonyms & Similar Words

Antonyms & Near Antonyms

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 Since 2019, state law has required law enforcement agencies that employ POST certificate holders to notify the board if a certificate holder knowingly made an untruthful statement during an internal affairs investigation, among other circumstances. — Shelly Bradbury, Denver Post, 8 May 2026 These questions were raised after reporting by The New York Times in August 2024 regarding Moore’s untruthful claims about receiving the Bronze Star in Afghanistan — a story originally reported on in 2022 by FOX45’s Mikenzie Frost. — Baltimore Sun Staff, Baltimore Sun, 26 Apr. 2026 In his earlier testimony on Thursday morning, Espinoza told Wise County District Attorney James Stainton that Horner had been untruthful throughout the investigative process. — Julia Bonavita, FOXNews.com, 9 Apr. 2026 Clearly, anything that is erroneous or untruthful cannot originate in divine Truth. — Wendy Landry, Christian Science Monitor, 23 Mar. 2026 See All Example Sentences for untruthful

Recent Examples of Synonyms for untruthful

Adjective

Instead, Denver retained possession and capitalized on the erroneous call to win.

— Bobby Burack OutKick, FOXNews.com, 6 Oct. 2026
That a reporter or two heard of this normal process led to the erroneous inference that a change of leadership is imminent.

— Jeffrey Sonnenfeld, Fortune, 1 Oct. 2026

Definition of erroneous

Adjective

As a result, choosing a plan based solely on monthly premiums can be misleading.

— Cindy Krischer Goodman, Sun Sentinel, 14 Oct. 2026
The Idaho Consumer Protection Act, enacted in 1971, protects consumers from false, deceptive or misleading representations, advertising, pricing and contracts.

— Harllie Stevenson, Idaho Statesman, 14 Oct. 2026

Definition of misleading

Adjective

Medical identity theft can lead to fraudulent bills and inaccurate patient records, so catching problems early is important.

— Kurt Knutsson, FOXNews.com, 18 Oct. 2026
Working with fellow researchers, Cade now has a good reason to believe the Nature report is more than likely inaccurate – the train’s rail route didn’t exist until 1846.

— Mike McRae October 15, New Atlas, 16 Oct. 2026

Definition of inaccurate

Adjective

The debate also took on an edgy, deeply personal tone, as the candidates repeatedly accused each other of being dishonest or misleading.

— ABC News, ABC News, 15 Oct. 2026
The other coach is dishonest and decides to strategically rank their players in a different order.

— Dana Mackenzie, Scientific American, 14 Oct. 2026

Definition of dishonest

Adjective

The reality, of course, is that the Southern accent is not some incorrect version of a national standard but instead a historically separate and unique dialect – or, more accurately, set of dialects.

— Valerie M. Fridland, The Conversation, 20 Oct. 2026
And Ballmer and the Clippers remain adamant the penalties—and the allegations of misconduct—are incorrect.

— Joshua Hong, Fortune, 20 Oct. 2026

Definition of incorrect

Adjective

The 2026 State of the Union speech stands in contrast, a speech by a mendacious demagogue who has degraded his listeners by debauching their instincts.

— Eliot A. Cohen, The Atlantic, 26 Feb. 2026
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

Definition of mendacious

Adjective

Its argument is that insurers have been pricing wildfire risk the wrong way, by looking backward at statistics and sorting homes by zip code.

— Nick Lichtenberg, Fortune, 15 Oct. 2026
The trailer begins as Ziegler’s Mae frantically asks family friend Benny, played by a sleepy Rob Lowe, for help after her big mistake — kissing the wrong brother between Graham Phillips’ Andrew and Elias Kacavas’ Theo.

— Nicole Fell, HollywoodReporter, 15 Oct. 2026

Definition of wrong

Adjective

Screening mammograms miss about one in eight breast cancers overall, and people with dense breasts are more likely to get false-negative results, the American Cancer Society reports.

— Samantha Agate, Kansas City Star, 14 Oct. 2026
Overall, screening mammograms miss about one in eight breast cancers, and people with dense breasts are more likely to get false-negative results.

— Samantha Agate, Charlotte Observer, 14 Oct. 2026

Definition of false

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“Untruthful.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/untruthful. Accessed 21 Oct. 2026.

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