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
  • Smith made out their former collaborators to be ungrateful and traitorous, and the kids weren't given the space to question her command.
    Zoey Lyttle, People.com, 18 Apr. 2025
  • Foreign military interventions can change victims from being viewed as a nuisance into being seen as powerful and traitorous enemies, potentially capable of exacting revenge, seizing power, or breaking away from the state.
    Benjamin A. Valentino, Foreign Affairs, 17 Oct. 2011
Adjective
  • Poor-quality or biased data can lead to inaccurate threat detection, making security systems unreliable.
    Melkon Hovhannisyan, Forbes.com, 29 Apr. 2025
  • The new prosecution also agreed that the Snapchat evidence was unreliable, but went a step further than the judge, dismissing the case entirely.
    Tresa Baldas, USA Today, 28 Apr. 2025
Adjective
  • Last year’s 17-9 start proved to be a false spring, one that lulled fans into thinking Craig Counsell replacing David Ross was the real difference between an 83-win Cubs team and the postseason.
    Paul Sullivan, Chicago Tribune, 25 Apr. 2025
  • Reemerging as a cult figure with cameo roles in films and TV shows, a Broadway revival of his Pee-wee stage show, and a final Pee-wee film, Reubens refuses to have his legacy be defined by media scandals based on false rumors.
    Tony Maglio, HollywoodReporter, 23 Apr. 2025
Adjective
  • While together, Odom struggled with addiction and was unfaithful in their relationship.
    Michael Nied, People.com, 16 Apr. 2025
  • Intriguingly, the researchers found that these unfaithful chains-of-thought were, on average, longer than faithful ones, suggesting the omissions weren't merely for brevity.
    ArsTechnica, ArsTechnica, 10 Apr. 2025
Adjective
  • The match ended when Heyman turned on both Punk and Reigns with a pair of treacherous low blows on each.
    Alfred Konuwa, Forbes.com, 20 Apr. 2025
  • In February, Star residents and City Council members clashed over competing needs for a new school and improvements to a treacherous road, with the school proposal winning out.
    Rose Evans, Idaho Statesman, 16 Apr. 2025

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Cite this Entry

“Faithless.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/faithless. Accessed 3 May. 2025.

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