Perhaps rhymes with:
apps, cap's, capps, caps, chaps, claps, collapse, crapps, craps, elapse, flaps, gap's, gaps, japs, kappes, kaps, knapp's, lapps, laps, lapse, maps, naps, raps, relapse, saps, schnapps, scraps, slaps, snaps, straps, taps, traps, wraps, yaps, zaps
Perhaps sounds like:
paperback, paperbacks, paperboy's, paperboys, paribas, paribas's, perovich, perpich, poorbaugh, porpoise, porpoises, powerbook, powerpc, powerpcs, powerpcs', prapas, prefabs, preface, prefix, prepackage, prepuce, previews, previous, priebke, privacies, privacy, probasco, probe's, probes, proboscis, probus, profess, professes, profs, profuse, proofs, propes, prophecies, prophecy, prophesies, propose, proposes, propps, props, proves, provigo, provigo's, proviso, provisos, provoke, provokes, provus, purpose, purposes, purves, purveys, purvis