Supply's rhymes with:
misapplies, supplies, applies, misapplies, supplies, applies, complies, implies, misapplies, plies, replies, supplies
Supply's sounds like:
sables, sabol's, savalas, scofflaws, scuffles, shapeless, shovels, showplace, shuffles, siebels, sivils, sobil's, sobils, soboleski, sobolewski, sobolik, spellacy, spells, spill's, spillage, spills, splash, splashes, splashy, splice, splices, spoilage, spoils, squabbles, subhlok, sublease, suffolk, supplies, swivels, syphilis