Polyp rhymes with:
dollop, wallop, billup, cullop, delap, delapp, develop, dollop, envelop, fillip, fulop, gallop, gallup, heslop, hislop, hyslop, julep, mckillip, mckillop, philip, phillippe, redevelop, scallop, tellep, tulip, underdevelop, wallop
Polyp sounds like:
pavlov, philby, philip, philipp, philippa, philippe, philippi, phillip, phillipe, phillipp, phillippe, phillippi, philp, pilaf, pileup, playboy, playoff, pleva, ploof, plop, plouff, plouffe, pluff, polevoi, pulp