1 unfaithful | Definition of unfaithful

unfaithful

adjective
un·​faith·​ful | \ ˌən-ˈfāth-fəl How to pronounce unfaithful (audio) \

Definition of unfaithful

: not faithful:
a : not adhering to vows, allegiance, or duty : disloyal an unfaithful friend
b : not faithful to marriage vows suspected her husband of being unfaithful
c : inaccurate, untrustworthy an unfaithful copy of a document

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Other Words from unfaithful

unfaithfully \ ˌən-​ˈfāth-​fə-​lē How to pronounce unfaithfully (audio) \ adverb
unfaithfulness noun

Examples of unfaithful in a Sentence

colonists who later proved to be unfaithful to the cause of independence

Recent Examples on the Web

Love Actually, where a 2000 re-recording of the song plays mournfully over Emma Thompson's heart-wrenching discovery that her husband has been unfaithful. Billboard Staff, Billboard, "The 100 Best Songs of 1969: Staff Picks," 14 Aug. 2019 Then the exiled Posthumus is bamboozled into believing Imogen has been unfaithful to him — just part of the welter of schemes, counterschemes, deceptions, disguises, and palace intrigue in the play. BostonGlobe.com, "The Ticket: What’s happening in the local arts world," 18 July 2019 And now, the Bay Area’s fourth-largest city can add to its awards mantle the fifth-place trophy among the most unfaithful cities in the nation. Joseph Geha, The Mercury News, "Fremont ranks as fifth most unfaithful city in the nation on affairs website hotlist," 19 June 2019 In Così fan tutte, however, nobody is punished: the officers lose the wager because the women prove unfaithful, but the opera seems to end happily for everyone. Larry Wolff, The New York Review of Books, "‘Così’ in Coney," 27 Mar. 2018 Despite their apparent passion, Juana's husband Philip was frequently unfaithful to her, his indiscreet affairs causing Juana to fly into rages and periods of depression that provoked the first rumors about Juana's mental state. Lauren Hubbard, Town & Country, "What Was Catherine of Aragon's Sister, Juana la Loca, Really Like?," 10 June 2019 Adultery by a husband might go unpunished, but an unfaithful wife would be executed. National Geographic, "Who was Hammurabi?," 22 Apr. 2019 Her fans are particularly touchy about Jay-Z, who has admitted to being unfaithful to his wife in the past. Martha Ross, The Mercury News, "Beyonce’s publicist tells Beyhive: Stop hating on Nicole Curran," 7 June 2019 Brodie is living in a seaside village, hanging out with his teenage son and taking a few easy jobs: following an unfaithful husband, tracking a possible pedophile online. Jim Kiest, ExpressNews.com, "12 new books for your summer reading list," 5 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'unfaithful.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of unfaithful

15th century, in the meaning defined above

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More Definitions for unfaithful

unfaithful

adjective

English Language Learners Definition of unfaithful

: having a sexual relationship with someone who is not your wife, husband, or partner
: not accurate

unfaithful

adjective
un·​faith·​ful | \ ˌən-ˈfāth-fəl How to pronounce unfaithful (audio) \

Kids Definition of unfaithful

: not faithful : disloyal

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