1
as in infidelity
lack of faithfulness especially to one's husband or wife
a wife who long ago became resigned to the chronic faithlessness of her husband
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
2
as in betrayal
the act or fact of violating the trust or confidence of another
the former butler's mercenary faithlessness shocked and offended the royal family
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
Recent Examples of Synonyms for faithlessness
Noun
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The subsequent episode—in which Sullivan, who had a serious boyfriend at home, is seen making out with one of the men—framed the incident as a simple case of infidelity.—
Judy Berman,
Time,
18 Feb. 2026 -
Moments after claiming bronze in Tuesday’s 20-kilometer men’s biathlon, Norway’s Sturla Holm Laegreid used the spotlight to make an emotional confession about infidelity and lingering feelings for his former partner.—
Denny Alfonso,
New York Times,
11 Feb. 2026
Noun
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Each day is a gamble of life and death, hope and betrayal; friendships run deep and can be shattered in an instant.—
Ashlee Conour,
Chicago Tribune,
19 Feb. 2026
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Based on Araminta Hall’s novel of the same name, the series explores a crime that shatters a decades-long friendship between three women, delving into guilt, retribution, love, betrayal and life-altering compromises.—
Kennedy French,
Variety,
18 Feb. 2026
Noun
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Advertisement Both Paxton’s baggage and his history of using his office to troll Democrats is a central feature in the Republican primary, which has devolved into a barrage of personal attacks of betrayal, adultery, and corruption.—
Philip Elliott,
Time,
10 Feb. 2026
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Ken Paxton, a Republican running for the Senate, denied the adultery allegations.—
Jane Harper,
Dallas Morning News,
15 Jan. 2026
Noun
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Perfidy — from the French perfidie via the Latin perfidia — means deceitfulness, treachery or a breach of faith or promise.—
Harmeet Kaur,
CNN Money,
21 Jan. 2026
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But despite all this, not every Chelsea fan outside his family will regard this transfer as treachery.—
Simon Johnson,
New York Times,
17 Jan. 2026
Noun
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Research on group dynamics shows that dissent is often interpreted as disloyalty rather than contribution.—
Benjamin Laker,
Forbes.com,
16 Jan. 2026
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The courts have warned against treating dissent as disloyalty.—
Chicago Tribune,
Chicago Tribune,
12 Jan. 2026
Noun
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According to the Security Service of Ukraine (SBU), investigators have opened more than 3,800 treason investigations since Russia launched its full-scale invasion in February 2022, with more than 1,200 individuals already found guilty and sentenced.—
Daria Tarasova-Markina,
CNN Money,
11 Feb. 2026
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Her testimony also alleges that prosecutors blocked her from testifying in civilian court and that she was transferred to military jurisdiction, accused of crimes including treason, rebellion and terrorism.—
Antonio María Delgado,
Miami Herald,
10 Feb. 2026
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Cite this Entry
“Faithlessness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/faithlessness. Accessed 21 Feb. 2026.
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