un·​fail·​ing | \ ˌən-ˈfā-liŋ How to pronounce unfailing (audio) \

Definition of unfailing

: not failing or liable to fail:
a : constant, unflagging unfailing courtesy
b : everlasting, inexhaustible a subject of unfailing interest
c : infallible, sure an unfailing test

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Other Words from unfailing

unfailingly \ ˌən-​ˈfā-​liŋ-​lē How to pronounce unfailing (audio) \ adverb

Synonyms & Antonyms for unfailing



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Examples of unfailing in a Sentence

She is known for her unfailing optimism. an unfailing judge of personal character
Recent Examples on the Web Jeff Dorsey and Joe Goodman for their unfailing dedication as volunteers with the Student Support Network. Courtney Mcgee, baltimoresun.com, "In a difficult year, many Towson citizens displayed kindness, generosity," 29 Dec. 2020 Paul Sarbanes, who died Sunday at the age of 87, served Maryland in Congress with unfailing integrity, quiet diligence and stubborn modesty. Dan Rodricks Baltimore Sun (tns), Star Tribune, "Leadership: Today's Senate needs more people of the kind Paul Sarbanes was," 8 Dec. 2020 Among them there has been an unfailing loyalty to our common good, and our enduring republic. San Diego Union-Tribune, "From the Archives: The Thanksgiving holiday was born in a time of hardship," 24 Nov. 2020 Hal was an unfailing champion of the delicate oddballs out there. Nick Paumgarten, The New Yorker, "“AngelHeaded Hipster”: Hal Willner Does T. Rex," 12 Oct. 2020 Each has embraced aging a different way — Ms. Birtwell most buoyantly, her open face reflecting the artist’s own unfailing curiosity. Roberta Smith, New York Times, "David Hockney: A Life in Drawing," 1 Oct. 2020 Her unfailing sense of justice reminded us of its awesome power, and her unbending sense of duty reminded us to remain committed to protecting our democracy, our Constitution and the rule of law. Free Press Staff, Detroit Free Press, "Michigan remembers Justice Ruth Bader Ginsburg: She 'answered the call' for workers," 19 Sep. 2020 The beauty entrepreneur is a dedicated sneakerhead and has the unfailing ability to get her hands on the most exclusive shoe launches before anyone else (life of a millionaire, amiright?!). Kelsey Stiegman, Seventeen, "Kylie Jenner And Stormi Webster Wear Matching Sold-Out Air Jordan 4 Metallic Sneakers," 9 Sep. 2020 The young hero, Lazzaro (Adriano Tardiolo), is either a little simple or a little saintly, meeting bullying with unfailing contentment. Roslyn Sulcas, New York Times, "What to Watch on Netflix to Help Language Learning," 11 May 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'unfailing.' 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 unfailing

14th century, in the meaning defined above

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Time Traveler for unfailing

Time Traveler

The first known use of unfailing was in the 14th century

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Statistics for unfailing

Last Updated

14 Jan 2021

Cite this Entry

“Unfailing.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unfailing. Accessed 27 Feb. 2021.

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More Definitions for unfailing



English Language Learners Definition of unfailing

: never changing or becoming weaker even in difficult times
: always providing enough of what is needed


un·​fail·​ing | \ ˌən-ˈfā-liŋ How to pronounce unfailing (audio) \

Kids Definition of unfailing

: not failing or likely to fail : constant unfailing support

Other Words from unfailing

unfailingly adverb He is unfailingly punctual.

More from Merriam-Webster on unfailing

Thesaurus: All synonyms and antonyms for unfailing

Nglish: Translation of unfailing for Spanish Speakers

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