unfailing
Americanadjective
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not failing; not giving way; not falling short of expectation; completely dependable.
an unfailing friend.
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inexhaustible; endless.
unfailing resources; unfailing good humor.
adjective
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not failing; unflagging
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continuous or unceasing
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sure; certain
Other Word Forms
Etymology
Origin of unfailing
Middle English word dating back to 1350–1400; see origin at un- 1, failing
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Year after year, St Monica's home for unmarried mothers gave itself a glowing report, praising the "unfailing devotion" provided to pregnant girls, women and their babies.
From BBC ● Jun. 14, 2026
“The Ten Year Affair” handles these twists with unfailing intelligence, capturing the sincere but confusingly improvised mores of marriage today.
From The Wall Street Journal ● Oct. 31, 2025
A major contributor to the 7M cult’s perceived creepiness is the dancers' unfailing polish and flat if gleaming expressiveness.
From Salon ● Jun. 6, 2024
Honestly, she probably should have leaned more heavily on the “making this film was so hard, everything felt so impossible” narrative instead of stressing, with unfailing generosity, how satisfying the experience was.
From Los Angeles Times ● Jan. 23, 2024
The stride length, the quickness of the foot feints, all clearly revealed to his unfailing eye, made him reassess his second conclusion.
From "The Princess Bride" by William Goldman
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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
