unpaired vs unmatched

unpaired and unmatched both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unpaired	No	Yes	No	No
unmatched	No	Yes	No	No

As adjectives, unpaired and unmatched are synonyms defined as:

Other synonyms of unpaired include odd, unmated.

unpaired (adjective)	unmatched (adjective)
of the remaining member of a pair	eminent beyond or above comparison
	of the remaining member of a pair