disadvantageously vs disadvantageous

disadvantageously is not an adjective while disadvantageous is an adjective.

Word	Noun	Adjective	Verb	Adverb
disadvantageously	No	No	No	Yes
disadvantageous	No	Yes	No	No

disadvantageously (adjective)	disadvantageous (adjective)
	involving or creating circumstances detrimental to success or effectiveness

disadvantageously (adverb)	disadvantageous (adverb)
in a disadvantageous way; to someone's disadvantage