Proboscis rhymes with:
calabasas, calabasas, colossus, manassas, acidosis, analysis, antithesis, apotheosis, aransas, archdiocese, arteriosclerosis, asbestosis, axis, banctexas, basis, calabasas, camdessus, canariensis, catharsis, caucasus, census, cirrhosis, colossus, consensus, crisis, diagnosis, dialysis, electrolysis, emphasis, fibrosis, francis, francis', genesis, geotaxis, glacis, hattusas, heterosis, homeostasis, hydrolysis, hypnosis, hypothesis, isis, lexus, manassas, mataksas, maxus, meiosis, metamorphasis, metamorphosis, metaxas, misdiagnosis, morphogenesis, narcissus, necrosis, nephrosis, neurosis, nexus, paralysis, parnassus, pegasus, philippoussis, plexus, prognosis, psoriasis, psychoanalysis, psychokinesis, psychosis, rhesus, sclerosis, seixas, symbiosis, synthesis, tarsus, texas, thesis, thomasas, thrombosis, ursus, versus
Proboscis sounds like:
paperback, paperbacks, paperboy's, paperboys, paribas, paribas's, perhaps, perovich, perpich, poorbaugh, porpoise, porpoises, powerbook, powerpc, powerpcs, powerpcs', prapas, prefabs, preface, prefix, prepackage, prepuce, previews, previous, priebke, privacies, privacy, probasco, probe's, probes, 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