Unmixed rhymes with:
intermixed, mixed, mixte, affixed, betwixt, blixt, fixed, intermixed, mixed, mixte, nixed, sixed, transfixed
Unmixed sounds like:
umscheid, umstead, unangst, unannounced, unassisted, unchecked, uncoat, uncoated, uncouth, unctad, uncut, unhinged, unionist, unionized, unissued, unjust, unmanaged, unmasked, unquote, unsaid, unscathed, unseat, unseated, unset, unstated, unsteady, unsuited, unswayed, unused, unwashed