unfaithful

adjective

ˌən-ˈfāth-fəl How to pronounce unfaithful (audio)
Definition of unfaithfulnext
as in traitorous
not true in one's allegiance to someone or something colonists who later proved to be unfaithful to the cause of independence

Synonyms & Similar Words

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Antonyms & Near Antonyms

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 unfaithful Starring Yakusho Koji, the film follows a man released on parole after killing his unfaithful wife. — Naman Ramachandran, Variety, 13 May 2026 The golden calf famously enraged Moses, showing that the Israelites had turned away from God and were unfaithful in Moses’s absence. — Britta Miller, The Washington Examiner, 9 May 2026 Portraits of him as a cheating drunk, who was unfaithful to his first wife, Julia Nye, also surfaced. — Kory Grow, Rolling Stone, 6 May 2026 This story isn't nearly as exciting because an NBA player being unfaithful to his girlfriend sort of just feels like a regular Thursday afternoon. — Amber Harding Outkick, FOXNews.com, 28 Apr. 2026 See All Example Sentences for unfaithful
Recent Examples of Synonyms for unfaithful
  1. traitorous
  2. unreliable
  3. false
  4. faithless
  5. disloyal
  6. treacherous
Adjective
  • Telemachus’ lone contribution is killing Melanthius, the traitorous Ithacan farmhand, thus preventing him from continuing to arm the suitors.
    — Marlow Stern, Variety, 17 July 2026
  • And at the very center of Hell is Satan himself, the traitorous Archangel Lucifer, depicted as a monstrous creature with wings and three heads.
    — Keith Cooper, Space.com, 11 May 2026
Definition of traitorous
Adjective
  • But analysts question those claims, which come from unreliable private sources and say voting by non-citizens is extraordinarily rare and has never been shown to have affected any American election.
    — Dave Goldiner, New York Daily News, 17 July 2026
  • Mind reading continues to be an unreliable communication strategy.
    — Valerie Mesa, PEOPLE, 16 July 2026
Definition of unreliable
Adjective
  • Earlier in July, a senior security source in Tehran told CNN that the claims of nuclear activities taking place at Pickaxe Mountain were false.
    — Jessie Yeung, CNN Money, 22 July 2026
  • Two Charlotte brokers are facing accusations of filing false life insurance applications for profit, according to North Carolina Insurance Commissioner Mike Causey.
    — Mark Price July 22, Charlotte Observer, 22 July 2026
Definition of false
Adjective
  • The French had said the British were faithless.
    — Literary Hub, Literary Hub, 20 May 2026
  • Consumed by rage and betrayal, Eleanor is driven to take a bloody, supernatural revenge upon her faithless husband.
    — Robert Lang, Deadline, 27 Dec. 2025
Definition of faithless
Adjective
  • Fans were quick to take to the comments of Washington’s post, with many joking that the actress was being disloyal to her other onscreen Scandal love interest, Fitzgerald Grant, played by Tony Goldwyn.
    — Virginia Chamlee, PEOPLE, 16 July 2026
  • What This Moment Is Actually About Gen Zers aren't disloyal, lazy or unreasonable for wanting job security.
    — Vince Carrabba, Forbes.com, 8 July 2026
Definition of disloyal
Adjective
  • If the institutions managing climate risk are instruments of a cosmic power consolidating control over humanity, the question of whether a carbon price is well-designed becomes not just wrong but spiritually treacherous.
    — Nick Lichtenberg, Fortune, 18 July 2026
  • The only thing more treacherous than his journey home might be tackling a ranking of Nolan's filmography.
    — Brian Truitt, USA Today, 17 July 2026
Definition of treacherous

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unfaithful
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Cite this Entry

“Unfaithful.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unfaithful. Accessed 24 Jul. 2026.

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Nglish: Translation of unfaithful for Spanish Speakers

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