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.
refers reefers referees reifiers reoffers revers reverso reveres reivers reavers refires rievers refries roofers reverse reveries ravers rivers rovers refroze refreeze reovirus rivieras roughers rephrase rivieres
buffers heifers lifers goffers zaffers feoffers piaffers offers hoofers puffers chafers gauffers chaufers reoffers gofers defers quaffers fifers whiffers differs suffers wafers knifers coffers refers doffers roofers reefers woofers loafers chaffers duffers niffers gaffers chauffers roughers kafirs lavers coughers quavers bouviers pavers reverse avers beavers zaffars louvers covers havers cyphers verso laveers divers waivers weavers averse lovers fears shofars shavers weevers sofars deifiers wavers savers zaffirs reveres laughers verse hovers rivers levers syphers zaffres firs gophers ciphers hoovers rivieras defiers weighers cavers spheres leviers reverso afars jivers liviers feres veers rovers kefirs viers ravers reifiers kaffirs movers coiffeurs sivers heavers quivers aivers sighers feoffors vivers fevers rievers reivers givers fivers newwavers rivieres revers reavers furs leavers overs livers diverse wivers severs chauffeurs shivers shovers
refer referee reefer reefier refire refry reifier reoffer revere reverie revery rifer prefer prefire