Unprofor's rhymes with:
phosphors, backdoors, baltimore's, bangalore's, becor's, bellcore's, bookstores, carnivores, centaur's, centaurs, centocor's, commodore's, dinosaurs, downpours, drugstores, ecuador's, encor's, encores, indoors, megastores, mentor's, nucor's, phosphors, salvador's, sophomores, superstores, toystores