As adjectives the difference between unalterable and unfailing
is that unalterable is incapable of changing or being altered while unfailing is inexhaustible.
unalterable
English
Adjective
(
en adjective)
incapable of changing or being altered
irrevocable or irreversible
Synonyms
* inalterable
Antonyms
* alterable
Derived terms
* unalterably
Anagrams
*