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.
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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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Current employees may experience the change as betrayal, leading to serious motivation, productivity and retention issues.Nancy Doyle, Forbes, 14 Jan. 2025
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Along with the glamorous guests, expect murder and betrayal to RSVP for a wedding with more twists and turns than the road from the Marina Grande to the Capri town square.Glenn Garner, Deadline, 11 Jan. 2025
Noun
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Liberty has been a member of the Florida Bar since 2004 and has no history of misconduct.Rafael Olmeda, Sun Sentinel, 12 Jan. 2025
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Baldwin’s attorneys accused the state of misconduct, pointing to a batch of unexamined bullets that a potential witness turned over to sheriff’s investigators last March.Meg James, Los Angeles Times, 10 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 21 Jan. 2025.
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