unendingly vs continuously

unendingly and continuously both are adverbs.

Word	Noun	Adjective	Verb	Adverb
unendingly	No	No	No	Yes
continuously	No	No	No	Yes

As adverbs, unendingly and continuously are synonyms defined as:

Other synonyms of unendingly include ceaselessly, endlessly, incessantly, unceasingly.

unendingly (adverb)	continuously (adverb)
with unflagging resolve	at every point
	with unflagging resolve