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
1
as in infidelity
lack of faithfulness especially to one's husband or wife
he eventually forgave his wife's unfaithfulness
Synonyms & Similar Words
Antonyms & Near Antonyms
2
as in betrayal
the act or fact of violating the trust or confidence of another
the jaw-dropping unfaithfulness of the person she had considered her best friend was deeply hurtful
Synonyms & Similar Words
Antonyms & Near Antonyms
3
as in adultery
a sexual encounter or relationship between a married person and someone other than their spouse
there were charges of unfaithfulness on both sides
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Antonyms & Near Antonyms
Example Sentences
Examples are automatically compiled from online sources to
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Recent Examples of unfaithful
Allison Degrushe Published, EW.com, 15 Aug. 2025
Speculation was particularly concentrated on a rumor that Bryan had been unfaithful to Amaya, which gained traction on social media, and while neither Bryan nor Amaya weighed in on it, Bryan's dad made sure to quell the rumors.
—Julia Moore, People.com, 5 Aug. 2025
Pete Hammond, Deadline, 27 Aug. 2025
See All Example Sentences for unfaithful
Adjective
Ultimately, the romance ended after Christine admitted to being unfaithful.
—Allison Degrushe Published, EW.com, 15 Aug. 2025
Speculation was particularly concentrated on a rumor that Bryan had been unfaithful to Amaya, which gained traction on social media, and while neither Bryan nor Amaya weighed in on it, Bryan's dad made sure to quell the rumors.
—Julia Moore, People.com, 5 Aug. 2025
Noun
Milvia Marigliano is a hoot as Coco Vulori, an old dear friend with some very loud opinions to express, and maybe the key to helping DeSantis solve his wife’s onetime unfaithfulness.
—Pete Hammond, Deadline, 27 Aug. 2025
See All Example Sentences for unfaithful
Recent Examples of Synonyms for unfaithful
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
Noun
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In the movie, the Bullmers’ relationship is still fraught, but the issues are based more in money than infidelity, and Anne (Lisa Loven Kongsli) is far more of a presence.—
Roxana Hadadi,
Vulture,
10 Oct. 2025
-
The two shared a tumultuous partnership that included allegations of infidelity, and divorced in 1967.—
Raven Brunner,
PEOPLE,
8 Oct. 2025
Noun
-
The game is designed to reset every episode to create fresh alliances and new betrayals, ensuring unpredictability and escalating drama.—
Leo Barraclough,
Variety,
8 Oct. 2025
-
Dom's heelish stories have included his feud and disowning of his father, his betrayal of Rhea Ripley to align himself with Liv Morgan, and, of course, his membership in the Judgment Day stable.—
Matthew Couden,
MSNBC Newsweek,
8 Oct. 2025
Noun
-
Unhappy unions loom large in the novel, which teems with adultery.—
Katy Waldman,
New Yorker,
22 Sep. 2025
-
Thou shalt not commit adultery.—
Lina Ruiz,
Fort Worth Star-Telegram,
22 Sep. 2025
Adjective
-
This variability makes tungsten diselenide unreliable for quantum applications.—
Neetika Walter,
Interesting Engineering,
3 Oct. 2025
-
Much of the country relies on petrol generators because the grid is patchy and unreliable, but unsubsidized fuel is too expensive for most.—
semafor.com,
semafor.com,
30 Sep. 2025
Noun
-
And when the surviving crew interrogates the android Ash about his treachery, the book has him pretty much spill the space beans.—
Daniel Dockery,
Vulture,
22 Sep. 2025
-
When does compromise become treachery or defeat?—
Literary Hub,
Literary Hub,
3 Sep. 2025
Noun
-
In the podcast, Holt interviewed Nikki's maternal grandfather, who revealed claims of judicial misconduct involving the Anderson County judge who presided over Roberson's trial.—
Erik Ortiz,
NBC news,
9 Oct. 2025
-
Andra Day has accused her former manager of financial misconduct in a new lawsuit.—
DeMicia Inman,
VIBE.com,
9 Oct. 2025
Adjective
-
Evaluating defamation claims where the report contains demonstrably false factual assertions.—
Tim Reynolds,
Fortune,
3 Oct. 2025
-
However, as several independent experts interviewed by NPR note, that claim is false.—
Scott Neuman,
NPR,
3 Oct. 2025
Cite this Entry
“Unfaithful.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unfaithful. Accessed 11 Oct. 2025.
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