Slipper rhymes with:
clipper, flipper, lipper, chipper, clipper, dipper, flipper, gipper, hipper, kipper, kippur, knipper, lipper, nipper, ripper, schipper, shipper, skipper, stripper, tipper, tripper, zipper
Slipper sounds like:
scalfaro, scalper, schlafer, schleifer, schlieper, selover, silber, silvar, silveira, silver, silvera, silveri, silveria, silverio, silverware, silvery, slavery, sleeper, sleepwear, slifer, slippery, sliver, slobber, sloper, sloppier, slover, solver, sulfur, sulphur