1
as in unerring
not being or likely to be wrong
an unfailing judge of personal character
Synonyms & Similar Words
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Antonyms & Near Antonyms
2
as in reliable
not likely to fail
the writer's unfailing sense of humor is again evident in his newest book
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
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Recent Examples of unfailing
Developed at the height of the Cold War, GPS was designed by the Pentagon to give US forces an unfailing sense of position anywhere on Earth.
—
Kapil Kajal,
Interesting Engineering,
11 Sep. 2025
In a world where trust now comes at a premium, trust in your GenAI strategy starts with trusting the data that fuels it, and the most unfailing data in your business lives in your contracts.
—
Monish Darda,
Forbes.com,
8 Sep. 2025
Yesterday’s pangrams were gainful, unfailing and unflagging.
—
Julia Jacobs,
New York Times,
19 May 2025
What is most important, always, is an unfailing loyalty to Trump.
—
Constance Grady,
Vox,
25 Apr. 2025
See All Example Sentences for unfailing
Kapil Kajal,
Interesting Engineering,
11 Sep. 2025
In a world where trust now comes at a premium, trust in your GenAI strategy starts with trusting the data that fuels it, and the most unfailing data in your business lives in your contracts.
—
Monish Darda,
Forbes.com,
8 Sep. 2025
Yesterday’s pangrams were gainful, unfailing and unflagging.
—
Julia Jacobs,
New York Times,
19 May 2025
What is most important, always, is an unfailing loyalty to Trump.
—
Constance Grady,
Vox,
25 Apr. 2025
See All Example Sentences for unfailing
Recent Examples of Synonyms for unfailing
Adjective
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Ditto Hugh Jackman’s unerring performance — perhaps his finest dramatic work yet — as a savage, unfeeling thug and unrepentant murderer and thief.
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Sir Charles, the Chuckwagon, the Round Mound of Rebound, has an unerring talent for getting to the point.
Adjective
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But the systems are only as reliable as their sources, and are prone to misinformation and manipulation.
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Amodei predicts that, over the next five to ten years, AI will achieve, among other things, the reliable prevention and treatment of nearly all natural infectious disease, the elimination of most cancer, the prevention of Alzheimer’s and a doubling of the human lifespan.
Adjective
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The season’s final visit by the defending World Series champs coaxed the first sellout crowd of the season for the Minnesota Twins on a perfect summer evening.
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Neither butter nor margarine is perfect, and both have potential drawbacks.
Adjective
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Thousands of five-star reviews attest to their high-quality, expensive feel and flawless fit.
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When a mouse costs more than $100, buyers expect premium materials, advanced software, and near-flawless execution.
Adjective
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Look For What's Missing From The Data Strong marketing leaders know data is directional, not infallible.
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Instead, he was treated as an infallible saint.
Cite this Entry
“Unfailing.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unfailing. Accessed 28 Jun. 2026.
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