Synonym Chooser

How is the word faithless different from other adjectives like it?

Some common synonyms of faithless are disloyal, false, perfidious, traitorous, and treacherous. While all these words mean "untrue to what should command one's fidelity or allegiance," faithless applies to any failure to keep a promise or pledge or any breach of allegiance or loyalty.

faithless allies

When can disloyal be used instead of faithless?

The synonyms disloyal and faithless are sometimes interchangeable, but disloyal implies a lack of complete faithfulness to a friend, cause, leader, or country.

disloyal to their country

When could false be used to replace faithless?

In some situations, the words false and faithless are roughly equivalent. However, false stresses the fact of failing to be true in any manner ranging from fickleness to cold treachery.

betrayed by false friends

How do perfidious and faithless relate to one another?

Perfidious adds to faithless the implication of an incapacity for fidelity or reliability.

a perfidious double-crosser

When is traitorous a more appropriate choice than faithless?

While the synonyms traitorous and faithless are close in meaning, traitorous implies either actual treason or a serious betrayal of trust.

traitorous acts punishable by death

When might treacherous be a better fit than faithless?

The meanings of treacherous and faithless largely overlap; however, treacherous implies readiness to betray trust or confidence.

a treacherous adviser

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 faithless Men are a structuring absence, as they are spoken of as faithless husbands, potential fiancés, feckless sons. John Bleasdale, Variety, 21 Nov. 2024 But, these faithless actors have never changed the outcome of an election. Solcyré Burga, TIME, 28 Oct. 2024 Since Biden is no longer in the running, they won't be considered faithless. Kaleigh Rogers, ABC News, 23 July 2024 Nellore admits to being of faithless background yet criticizes people of faith. Reader Commentary, Baltimore Sun, 8 Mar. 2024 See All Example Sentences for faithless
Recent Examples of Synonyms for faithless
Adjective
  • Clarisse looks intimidating climbing out of a boat, as does Bushnell’s traitorous Luke, who wields a sharp-looking knife.
    Dessi Gomez, Deadline, 24 July 2025
  • There's a delicious whodunit aspect to it, too, as the list of five potentially traitorous suspects includes the operative's own high-profile wife (Cate Blanchett).
    Brian Truitt, USA Today, 4 July 2025
Adjective
  • The world is not going to wait for the U.S. to hash out its chaos, and other countries are already moving to reorient parts of their manufacturing and trade schemes to circumvent an unreliable United States.
    New York Daily News Editorial Board, New York Daily News, 3 Aug. 2025
  • Issues such as unreliable Wi-Fi, slow booking processes or credit card processing failures drive guests to competitors.
    Mark Holzberg, Forbes.com, 31 July 2025
Adjective
  • The company allegedly submitted false invoices to CBP while creating separate invoices that reflected the accurate price of the goods, which were used to collect payment from the end purchasers.
    Kate Nishimura, Sourcing Journal, 30 July 2025
  • Winfrey's spokesperson told Newsweek that these reports are false, and that the road will remain open as long as is necessary.
    Marni Rose McFall, MSNBC Newsweek, 30 July 2025
Adjective
  • Duggar claims the government used a statement posted to his family's Facebook page and attributed to him claiming Duggar had secretly viewed pornography, led a double-life and had been unfaithful to his wife.
    Arkansas Online, Arkansas Online, 29 July 2025
  • In My Good Side, the Vanderpump Rules alum, 40, opened up about how her husband admitted to being unfaithful amid the fallout of Rachel Leviss' cheating scandal with Tom Sandoval in 2023, which prompted the end of the latter's nine-year relationship with Ariana Madix.
    Ilana Kaplan, People.com, 22 July 2025
Adjective
  • In addition to some light-hearted banter between Thia and Dek, the trailer also gives viewers a look at the treacherous journey ahead of them.
    Caroline Blair, People.com, 23 July 2025
  • Airplanes can be treacherous for people who use wheelchairs.
    Joseph Shapiro, NPR, 17 July 2025

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Cite this Entry

“Faithless.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/faithless. Accessed 7 Aug. 2025.

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