ill-assorted

adj

adj

Badly matched, or unmatched.

He and Mrs Jonathan were a remarkable pair; one of those ill-assorted couples that you wonder at.1860, Anne Beale, Gladys, the Reaper:
Last Christmas Eve the "Pines Express" arrived at Bath behind an ill-assorted combination of locomotives.1960 March, “Motive Power Miscellany: Western Region”, in Trains Illustrated, page 184:

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