Synonym Chooser

How does the adjective mendacious differ from other similar words?

Some common synonyms of mendacious are deceitful, dishonest, and untruthful. While all these words mean "unworthy of trust or belief," 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

When is deceitful a more appropriate choice than mendacious?

The words deceitful and mendacious 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 might dishonest be a better fit than mendacious?

In some situations, the words dishonest and mendacious are roughly equivalent. However, dishonest implies a willful perversion of truth in order to deceive, cheat, or defraud.

a swindle usually involves two dishonest people

In what contexts can untruthful take the place of mendacious?

The meanings of untruthful and mendacious largely overlap; however, untruthful stresses a discrepancy between what is said and fact or reality.

an untruthful account of their actions

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 mendacious After a similarly poor, though far less mendacious, performance from Biden in the Presidential debate, leaders in his party demanded that the President exit the race. Susan B. Glasser, The New Yorker, 8 Aug. 2024 Florida’s mendacious leaders only darken the nightmare. Jake Cline, Washington Post, 8 July 2024 The mendacious Gray Heron lures Mahito into a dreamlike world with the possibility of bringing back his deceased mother. Eric Vilas-Boas, Vulture, 10 Mar. 2024 This is a crabbed and mendacious interpretation of the law. Michael Hiltzik, Los Angeles Times, 5 Apr. 2024 See All Example Sentences for mendacious
Recent Examples of Synonyms for mendacious
Adjective
  • Here are some of the most affordable autos A Chinese brain chip company could soon surpass Elon Musk's Neuralink The 10 most dishonest states in America — according to Las Vegas defense lawyers Costco's Kirkland brand became a massive financial success.
    William Gavin, Quartz, 31 Mar. 2025
  • Attempting to separate Robinson’s baseball career from racial animus and conflict feels intellectually dishonest.
    Ken Makin, Christian Science Monitor, 27 Mar. 2025
Adjective
  • The erroneous deportation of Kilmar Armando Abrego Garcia was first reported by The Atlantic.
    Mike Allen, Axios, 2 Apr. 2025
  • However, navigating this situation requires caution to ensure compliance with employment laws and to avoid making erroneous assumptions without having all the facts.
    Johnny C. Taylor Jr., USA Today, 1 Apr. 2025
Adjective
  • 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
  • What is more untruthful: A thing written down, or a sustained deception of the heart?
    Nicolette Polek, Harper's Magazine, 2 July 2024
Adjective
  • Looking down into the pit is not a powerful moment — looking up at this teenager that is desperate to get out of the wilderness and kill this false prophet in Lottie is powerful.
    Jackie Strause, HollywoodReporter, 10 Apr. 2025
  • In June of 2023, police approached her residence after receiving a false tip about child abuse.
    Mackenzie Cummings-Grady, Billboard, 10 Apr. 2025

Browse Nearby Words

Podcast

Cite this Entry

“Mendacious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/mendacious. Accessed 16 Apr. 2025.

More from Merriam-Webster on mendacious

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!