unpaired vs unmated

unpaired and unmated both are adjectives.

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

As adjectives, unpaired and unmated are synonyms defined as:

Other synonyms of unpaired include odd, unmatched.

unpaired (adjective)	unmated (adjective)
of the remaining member of a pair	not mated sexually
	of the remaining member of a pair