unfaltering vs steadfast

unfaltering and steadfast both are adjectives.

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

As adjectives, unfaltering and steadfast are synonyms defined as:

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

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

unfaltering (adjective)	steadfast (adjective)
marked by firm determination or resolution; not shakable	firm and dependable especially in loyalty
	marked by firm determination or resolution; not shakable