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.
cuatros caters coaters quatres couters cutters cateress catarrhs coutures catteries cauteries cadres gaters gators cotters cottars gutters guitars gaiters quoters cooters quieters quatorze quittors goitrous quitters coteries cottiers cauterize coders kiters codders gadders gaydars goiters goitres guiders
cuatros taros maters gaters goitrous toros trios coaters trows troys citrous trois raters seaters paters stroys oaters tatars nitroso waters metros tyros beaters retros quatres tiros gators heteros heaters caters viators eaters haters boaters petrous satyrs outrows strows nitrous daters nitros taters matres cheaters
cuatro catarrh cater cuter quatre