unfeignedly vs truly

unfeignedly and truly both are adverbs.

Word	Noun	Adjective	Verb	Adverb
unfeignedly	No	No	No	Yes
truly	No	No	No	Yes

As adverbs, unfeignedly and truly are synonyms defined as:

Other synonyms of unfeignedly include sincerely.

unfeignedly (adverb)	truly (adverb)
with sincerity; without pretense	in accordance with truth or fact or reality
	by right
	with sincerity; without pretense
	in fact (used as intensifiers or sentence modifiers)