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 In one play, Patrick Mahomes reminded his Kansas City Chiefs of the reason for their unfailing belief. Mike Jones, USA TODAY, 13 Sep. 2021 Rather than hang his head, Mayo, an unfailing optimist with a background in advertising and a penchant for armchair philosophy, shifted his gaze above ground to pull off one of the most graceful pivots by a venue in the pandemic era. Joseph Hudak, Rolling Stone, 15 June 2021 Prince Philip in particular was kind and warm, with a sharp wit and unfailing good humor. Paulina Jayne Isaac, Glamour, 3 June 2021 What their presence can’t do is diminish the unrelenting sense of menace in such scenes, of which there are many, all of them good reasons for the unfailing appeal of this tale. Dorothy Rabinowitz, WSJ, 27 May 2021 But this is Happy Endings, where his unfailing commitment to increasingly ludicrous personality traits places the joke on Dave. Sophy Ziss, Vulture, 13 Apr. 2021 Hers is an enduring story of how unfailing determination and a refusal to quit can overcome the most difficult challenges. Jeff Rowe, Star Tribune, 30 Mar. 2021 Jeff Dorsey and Joe Goodman for their unfailing dedication as volunteers with the Student Support Network. Courtney Mcgee, baltimoresun.com, 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, 8 Dec. 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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The first known use of unfailing was in the 14th century

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Last Updated

23 Sep 2021

Cite this Entry

“Unfailing.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unfailing. Accessed 26 Sep. 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

Nglish: Translation of unfailing for Spanish Speakers


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