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
Relevance
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
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
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Recent Examples of unfaithful
Jenna Ryu, SELF, 11 June 2025
Cassie Ventura, the case’s star witness and another former girlfriend of Combs, testified that Combs was unfaithful to her by dating Gina throughout their 11-year relationship.
—Elizabeth Wagmeister, CNN Money, 23 May 2025
Already, reviews are raving about Lawrence’s performance as a woman who experiences postpartum depression and develops psychosis, opposite Robert Pattinson as her unfaithful husband.
—Anna Cafolla, Vogue, 18 May 2025
Donald was repeatedly unfaithful and belittled his wife’s artistic side.
—Stephen Rodrick, Rolling Stone, 18 May 2025
See All Example Sentences for unfaithful
Adjective
But understanding what drives a person to be unfaithful can offer clarity, closure, and even a starting point for healing.
—Jenna Ryu, SELF, 11 June 2025
Cassie Ventura, the case’s star witness and another former girlfriend of Combs, testified that Combs was unfaithful to her by dating Gina throughout their 11-year relationship.
—Elizabeth Wagmeister, CNN Money, 23 May 2025
Already, reviews are raving about Lawrence’s performance as a woman who experiences postpartum depression and develops psychosis, opposite Robert Pattinson as her unfaithful husband.
—Anna Cafolla, Vogue, 18 May 2025
Donald was repeatedly unfaithful and belittled his wife’s artistic side.
—Stephen Rodrick, Rolling Stone, 18 May 2025
See All Example Sentences for unfaithful
Recent Examples of Synonyms for unfaithful
Adjective
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Michael Fassbender plays a British intelligence officer tasked with finding who leaked a top-secret software program and betrayed their country, and the list of five potentially traitorous suspects includes his own high-profile wife (Cate Blanchett).—
Brian Truitt,
USA Today,
10 May 2025
-
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
Noun
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There have also been issues with infidelity, the source alleged.—
Anna Lazarus Caplan,
People.com,
30 June 2025
-
This disregard often pushes them toward infidelity, without thinking of its consequences.—
Mark Travers,
Forbes.com,
26 June 2025
Noun
-
The stories are compelling, often blending sure-fire elements of true crime, psychology (primarily the surrender and loss of self, replaced with a groupthink mentality), deception, betrayal and all manner of drama.—
R. Daniel Foster,
Forbes.com,
1 July 2025
-
This represents a fundamental betrayal of the political realignment that brought working-class voters to the GOP in the first place.—
Nicholas Creel,
MSNBC Newsweek,
30 June 2025
Noun
-
After Swaggart accused Gorman of adultery, Gorman hired a private investigator who followed Swaggart and took the photographs in New Orleans that ignited the scandal.—
Muri Assunção,
New York Daily News,
1 July 2025
-
Every look with such an irregular desire is in our Savior’s opinion a virtual adultery. . . .—
Merve Emre,
New Yorker,
16 June 2025
Adjective
-
While introducing a range of endearingly unreliable characters, the action rolls out a succession of comically absurd situations that provide laughs from the film’s beginning to its end.—
Joan MacDonald,
Forbes.com,
9 July 2025
-
However, by 2024, this gimbal had grown unreliable due to age, and so the Climate Sounder now relies on the standard 28-degree rolls to make its observations.—
Keith Cooper,
Space.com,
7 July 2025
Noun
-
The six-parter, to debut July 14, follows six groups of friends, and six historical cases of murder and treachery among them.—
Etan Vlessing,
HollywoodReporter,
19 June 2025
-
But amid the bloodbaths and treacheries, Westeros still penciled in time for a little romance — some more compelling than others (Jon and Ygritte > Jon and Daenerys).—
Tyler Aquilina,
EW.com,
17 Apr. 2025
Noun
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His last review, which examined misconduct allegations against Russell Brand, only referenced job titles.—
Jake Kanter,
Deadline,
12 July 2025
-
Sorrell exited the company in 2018 amid a probe of allegations of misconduct, and Read, who spent much of this time building new digital operations, became the company’s new leader.—
Brian Steinberg,
Variety,
10 July 2025
Adjective
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The Federal Motor Carrier Safety Administration report said that driver also made a false report related to hours of service.—
Matthew Adams,
Fort Worth Star-Telegram,
3 July 2025
-
His claims are false and do not reflect accountability for the impact of his actions on the community.—
Marley Malenfant,
Austin American Statesman,
3 July 2025
Cite this Entry
“Unfaithful.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unfaithful. Accessed 16 Jul. 2025.
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