1
as in adultery
lack of faithfulness especially to one's husband or wife
infidelity can lead to divorce
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2
as in betrayal
the act or fact of violating the trust or confidence of another
the one thing that the political boss will not forgive is infidelity
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3
as in misconduct
a sexual encounter or relationship between a married person and someone other than their spouse
had known about his wife's infidelities for years
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Recent Examples of infidelity
Alongside the deeply hurtful acts of infidelity, abusive behavior and a lack of personal effort to keep the spark alive, there were three actions that stood out as most harmful to a relationship.
—
Mark Travers, Forbes, 22 Dec. 2024
Lies, deceit, infidelity, and the shape-shifting nature of truth, Wilder’s Witness for the Prosecution is infinitely rewatchable.
—Tomris Laffly, TIME, 20 Dec. 2024
Many of the hallmarks of emotional infidelity — building intimacy with someone other than your partner, spending time with them, and confiding in them — bear a striking resemblance to friendship.
—Allie Volpe, Vox, 2 Dec. 2024
The most shocking moment comes when Contessa accuses Dr. Damon of infidelity and fathering mixed-race children—a claim the other ladies quickly shut down.
—Shelby Stewart, Essence, 23 Dec. 2024
See all Example Sentences for infidelity 
Mark Travers, Forbes, 22 Dec. 2024
Lies, deceit, infidelity, and the shape-shifting nature of truth, Wilder’s Witness for the Prosecution is infinitely rewatchable.
—Tomris Laffly, TIME, 20 Dec. 2024
Many of the hallmarks of emotional infidelity — building intimacy with someone other than your partner, spending time with them, and confiding in them — bear a striking resemblance to friendship.
—Allie Volpe, Vox, 2 Dec. 2024
The most shocking moment comes when Contessa accuses Dr. Damon of infidelity and fathering mixed-race children—a claim the other ladies quickly shut down.
—Shelby Stewart, Essence, 23 Dec. 2024
See all Example Sentences for infidelity
Recent Examples of Synonyms for infidelity
Noun
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The article included other remarks related to Carter’s faith − such as the importance of the separation of church and state, a conviction born of Carter’s Southern Baptist upbringing − but the adultery comment opened a rift with Carter’s kin in Christ.—
John Bacon,
USA TODAY,
31 Dec. 2024
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Here’s what to know about the legal proceedings of adultery in Texas.—
Marley Malenfant,
Austin American-Statesman,
9 Dec. 2024
Noun
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After Rifaat’s betrayal, the anointed was Bassel, the crown prince.—
Jay Nordlinger,
National Review,
27 Jan. 2025
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Recommended Trump moves from ‘American carnage’ to ‘a horrible betrayal’ in second inaugural Juries also convicted some on charges of seditious conspiracy, which refers to activities that undermine a state without directly attacking it.—
Patrik Jonsson,
The Christian Science Monitor,
24 Jan. 2025
Noun
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Inspectors general are charged with rooting out government waste, fraud, abuse, and preventing misconduct.—
Brady Knox,
Washington Examiner - Political News and Conservative Analysis About Congress, the President, and the Federal Government,
25 Jan. 2025
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The move is part of broader efforts by the organization to prevent and address misconduct within the French film industry.—
Scott Roxborough,
The Hollywood Reporter,
23 Jan. 2025
Noun
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Welcome back for another season full of [Alan Cumming voice] deception, backstabbing and treachery!—
Nick Caruso,
TVLine,
9 Jan. 2025
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Yet Milady and her treachery have for nearly 200 years always stood out.—
Stephen Schaefer,
Boston Herald,
15 Apr. 2024
Noun
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South Korean presidents do not enjoy immunity from insurrection or treason charges.—
Yeo Boon Ping,
CNBC,
31 Dec. 2024
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He is also being investigated by Russia’s Federal Security Service (FSB) for treason.—
George Nelson,
ARTnews.com,
31 Dec. 2024
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Cite this Entry
“Infidelity.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infidelity. Accessed 30 Jan. 2025.
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