"Mismatched" refers to things that do not go together well or do not match each other. It is used to describe items or individuals that are not compatible or suited to each other. Full definition
The United Nations Food and Agriculture Organization said May 23 that price swings will persist in coming years because of mismatches between supply and demand. (bloomberg.com)
Collins lined up all over the field creating all kinds of mismatches in coverage, most of which went in his favor. (sbnation.com)
Keep your colour palette relaxed and rustic, in shades of fern green, duck - egg blue and warm beige, teamed with mismatched furniture in warm, weathered woods. (idealhome.co.uk)