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.
retears redears reutters retros raters ritters readers redders ratters writers routers retries rotters retires rioters rooters retirees rotaries rotors radars riders redries retrace ridders raiders redraws rudders redress ruderies readdress retrousse
retears tears wheatears tars butters betters neuters utters quieters cooters footers pewters paters titters baiters routers hooters heteros loiters peters otters caters bitters waters liters rioters sitters vetters daters matters meteors haters tatters hauteurs doters touters jitters couters quoters metiers stars puttiers knitters terse rooters miters tetters steres powters ratters deters whitters cheaters shatters setters shooters shutters stairs gaiters mooters natters toters cedars oaters batters attars tiers potters tuateras beaters noters goiters tatars gutters sataras cotters lotters jotters ottars outers kiters heaters cottiers knotters biters fetters writers deairs coaters eaters hatters gaters cutters litters quitters getters hitters rotters looters tares vetoers dears fitters auteurs niters tahrs putters meeters taros letters guitars cottars mutters meters pitiers petters voters netters pouters teeters boaters nutters ritters souters sitars maters tarsi suiters raters dieters redears reutters stares patters seaters steers tuataras totters titers daughters wetters waiters dotters tooters taters citers whetters chatters chitters uterus sheeters shouters yatters