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
Franklin was less concerned with unfailing rectitude than Washington, yet he also lived by a code of public service and personal honor that made him one of the most celebrated men of his times.
From Seattle Times • Aug. 18, 2023
“No more raisins, Demi. They’ll make you sick,” says Mamma to the young person who offers his services in the kitchen with unfailing regularity on plum-pudding day.
From "Little Women" by Louisa May Alcott
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
