Unfailing is a related term of indisputable.
As adjectives the difference between unfailing and indisputable
is that unfailing is inexhaustible while indisputable is not disputable; not open to question; obviously true.
indisputable
English
Alternative forms
* undisputable
Adjective
(
en adjective)
Not disputable; not open to question; obviously true
Synonyms
*inarguable
*unarguable
* unchallengeable
See also
* undeniable
* irrefutable
----