Mistreat rhymes with:
st, street, streett, retreat, st, street, streett, treat, breit, concrete, crete, discreet, discrete, excrete, freet, greet, grete, indiscreet, kriete, prete, retreat, secrete, st, street, streett, threatt, threet, treat
Mistreat sounds like:
magistrate, mainstreet, mastered, meckstroth, menstruate, mistreated, mistretta, mostaert, mustard, mustered