mismatched

adjectives

either not matched or unsuitably matched
mismatched
antonym
matched
is similar to
not easy to combine harmoniously
ill-sorted, incompatible, mismated, unsuited
is similar to
of the remaining member of a pair, of socks e.g.
odd, unmatched, unmated, unpaired
see also
not compatible
"incompatible personalities"; "incompatible colors"
incompatible
(of a contest or contestants) not fairly matched as opponents
"vaudeville...waged an uneven battle against the church"
mismatched, uneven