Endorse rhymes with:
borse, bourse, coarse, corse, course, divorce, enforce, ensource, force, forse, gift-horse, hoarse, horse, laforce, midcourse, morse, morss, norse, nourse, outsource, perforce, reinforce, remorse, sorce, source, vorce
Endorse sounds like:
enders, endorses, endres, endress, endrizzi, endures, entergy, enterococcus, enters, entourage, entourages, entrees, entries