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.
sitars stars stares stairs sataras suitors sitters suiters stirs stores stress stroys steres citrus strass strews steers strays sutras citers strows straws satyrs stours stoures souters setters siddurs seaters citrusy stereos storeys sutures satires citrous citreous sudaries satirise sautoirs hysterias sautoires cedars ciders seders sudors satoris seeders stories satirize
tars stars guitars cottars attars tatars sitars ottars mutters loiters pewters tarsi gaters gators mooters heaters fetters meeters metros tares quoters lidars betters daters oaters peters dears maters ritters litres potters nitres hitters cedars litters biters batters motors daughters miters taters deairs routers baiters vetters putters butters rioters powters stirs sutras fitters reutters stairs tutors waiters wetters whetters dieters chadars suiters teeters cheaters chitters shatters titers shooters sitters shutters titters tetris haters outers midairs meters satyrs knitters touters toters citrus ratters petters retears liters deodars knotters setters quieters netters patters seaters letters jotters foetors gutters redears coaters taros metres writers neuters niters noters jitters tears couters tatters nutters sataras viators hatters footers deodaras rooters otters bitters nitros lotters tres cotters eaters beaters tors souters quitters hooters stares boaters gaiters dotters goitres rotors radars dares fetors bettors matters goiters cuatros quittors natters kiters tuataras totters deters suitors getters cooters gaydars paters voters caters matres tahrs quatres looters cutters tetters citers tooters mitres doters raters utters waters wheatears whitters retros rotters chatters tetras cheddars chuddars sheeters titres shouters pouters yatters
sitar satara sitter stair star stare starry straw strawy stray suiter suitor sister sistra