I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
serosa serosae serows serous sers serious sears seers zeros seres suers ceros saros series zeroes serais sieurs cerous sierras sorrows seeress serries sirs sris sorus sours ceres sires sores suras soars xerus soras surras cereus cerias sirees sirras surahs cirrose cirrous sirrahs sirrees soirees souaris surreys
serosa serows karoos roes trows brosy karroos barrows hydrous narrows giros marrows biros burros bursa euros ceros grows parous borrows brose broos furrows porous farrows morros curiosa harrows ursae churros charros tyros trios tiros duros zeroes serosae cirrose pyros froes gyrose cheeros torose dorsa saros prosy bros presa vireos pros heroes proso eros brios arrows hearsay erose ferrous praos pharos arose rosy aurous porose guiros cerous faros bursae barrios sorrows morose gyros pareos taros rose kouros brows troys curios kaross morrows burrows gross cross pross heros prose vrows proas rows prows crows dross torous chiros frows warsaw rerose cirrous serous zeros hydros toros trois ursa cheerios yarrows
serow ser cero sear seer sera serai sere serry sierra suer zero user