unimpeachably vs unimpeachable

unimpeachably is not an adjective while unimpeachable is an adjective.

Word	Noun	Adjective	Verb	Adverb
unimpeachably	No	No	No	Yes
unimpeachable	No	Yes	No	No

unimpeachably (adjective)	unimpeachable (adjective)
	completely acceptable; not open to exception or reproach
	free of guilt; not subject to blame
	beyond doubt or reproach

unimpeachably (adverb)	unimpeachable (adverb)
without question