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unfailing

[uhn-fey-ling] /ʌnˈfeɪ lɪŋ/
adjective
1.
not failing; not giving way; not falling short of expectation; completely dependable:
an unfailing friend.
2.
inexhaustible; endless:
unfailing resources; unfailing good humor.
Origin of unfailing
1350-1400
Middle English word dating back to 1350-1400; See origin at un-1, failing
Related forms
unfailingly, adverb
unfailingness, noun
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Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for unfailing

unfailing

/ʌnˈfeɪlɪŋ/
adjective
1.
not failing; unflagging
2.
continuous or unceasing
3.
sure; certain
Derived Forms
unfailingly, adverb
unfailingness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for unfailing
adj.

late 14c., "never coming to an end, unceasing," from un- (1) "not" + gerundive of fail (v.). Related: Unfailingly.

Online Etymology Dictionary, © 2010 Douglas Harper
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