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.
retires retirees retries retros redress retears retrace redries ruderies rotaries reutters readdress retrousse raters rotors riders raiders ratters readers redders redraws ridders rioters redears rooters rotters routers rudders ritters writers radars
tires satires retires attires tres tares metres trews matures treys buttress puttiers nitres cottiers litres coutures votress tyres trees quatres dairies sautoirs stares stirs stress sutures waitress tries mattress goitres matres retries retirees poetries viatores tiros tiers tores futures trues pitiers tress natures features metiers mitres sautoires stairs steres stores strews titres shoetrees
retire retiree retore retro retry