unbendable vs unfaltering

unbendable and unfaltering both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unbendable	No	Yes	No	No
unfaltering	No	Yes	No	No

As adjectives, unbendable and unfaltering are synonyms defined as:

unbendable and unfaltering: marked by firm determination or resolution; not shakable

Other synonyms of unbendable include firm, steadfast, steady, stiff, unshakable, unwavering.

unbendable (adjective)	unfaltering (adjective)
marked by firm determination or resolution; not shakable	marked by firm determination or resolution; not shakable