not failing; unflagging continuous or unceasing sure; certain
WordReference Random House Learner's Dictionary of American English © 2025
un•fail•ing /ʌnˈfeɪlɪŋ/USA pronunciation
adj.
WordReference Random House Unabridged Dictionary of American English © 2025- steadfast;
steady;
dependable:unfailing in his loyalty. - endless;
inexhaustible:unfailing good humor.
un•fail•ing
(un fā′ling),USA pronunciation adj.
un•fail′ing•ly, adv.
un•fail′ing•ness, n.
- not failing;
not giving way;
not falling short of expectation;
completely dependable:an unfailing friend. - inexhaustible;
endless:unfailing resources; unfailing good humor.
- 1350–1400; Middle English; see un-1, failing
un•fail′ing•ness, n.
Collins Concise English Dictionary © HarperCollins Publishers::
'unfailing' also found in these entries (note: many are not synonyms or translations):