1
as in infidelity
lack of faithfulness especially to one's husband or wife
he eventually forgave his wife's unfaithfulness
Synonyms & Similar Words
Relevance
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
Recent Examples of Synonyms for unfaithfulness
Noun
-
Denver jurors are expected to hear this summer about the many allegations of infidelity, coercion, scheming and fraud that have divided one of the city’s most prominent families.—
Justin Wingerter,
The Denver Post,
10 Mar. 2025 -
Co-written by Gaines and Qasim Basir, The Dutchman stars André Holland as Clay, a successful Black man grappling with his wife Kaya’s (Zazie Beetz) infidelity, as well as his own self-perception versus how the world sees him because of the color of his skin.—
Glenn Garner,
Deadline,
8 Mar. 2025
Noun
-
Ultimately, cost-inflicting behaviors are driven by the all-consuming fear of abandonment or betrayal.—
Mark Travers,
Forbes,
16 Mar. 2025
-
The top Senate Democrat's support for the bill moving forward, in which he was joined by nine other members of the chamber's Democratic Caucus, prevented a government shutdown, but was seen by many in his party as a betrayal.—
Mark Davis,
Newsweek,
15 Mar. 2025
Noun
-
The faith is rooted in the Vedas, an ancient Hindu scripture and prescribes the five lifetime vows: no alcohol, no addictions, no adultery, no meat and no impurity of body and mind.—
James Powel,
USA TODAY,
9 Mar. 2025
-
Under Taliban rule, morality laws are strictly enforced, and activities considered immoral or against Islamic principles—such as pornography, adultery, or LGBTQ+ content—are harshly punished.—
Dan Perry,
Newsweek,
28 Feb. 2025
Noun
-
His greatest dream, beside destroying Nato from within, is dividing the west and China - as a return favor for the treachery of Nixon’s demarche.—
Melik Kaylan,
Forbes,
3 Mar. 2025
-
Witness was his 1952 manifesto on fellow-traveling American liberals and their treachery, which emboldened the Soviet Union.—
Michael Kimmage,
Foreign Affairs,
25 Feb. 2025
Noun
-
Despite early reports of abuse, the district allegedly failed to act, allowing Yeh to continue his misconduct until his conviction on 17 felony counts of child molestation, according to the lawsuit.—
Real-Time News team,
Miami Herald,
14 Mar. 2025
-
Peltier’s attorneys and supporters would wage a decades-long battle through appeals, writs and petitions to circuit courts, federal courts, the U.S. Supreme Court and three U.S. presidents, alleging numerous incidents of misconduct by the FBI in Peltier’s case.—
Tom White,
Deadline,
12 Mar. 2025
Noun
-
Jane was subsequently convicted of treason and sentenced to death.—
Pan Pylas,
Chicago Tribune,
9 Mar. 2025
-
Yoon has presidential immunity from most criminal prosecutions but that doesn’t cover grave charges like rebellion and treason.—
Hyung-Jin Kim,
Los Angeles Times,
8 Mar. 2025
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.
Cite this Entry
“Unfaithfulness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unfaithfulness. Accessed 24 Mar. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share