ill-sorted vs mismated

ill-sorted and mismated both are adjectives.

Word	Noun	Adjective	Verb	Adverb
ill-sorted	No	Yes	No	No
mismated	No	Yes	No	No

As adjectives, ill-sorted and mismated are synonyms defined as:

Other synonyms of ill-sorted include incompatible, unsuited.

ill-sorted (adjective)	mismated (adjective)
not easy to combine harmoniously	not easy to combine harmoniously