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.
cariosity curiosity crista crusty cristae caroused creosote crosstie karst crest curst grist crust corset cruset cresset crossed cruised goriest querist caressed grisette crosshead
cariosity curiosity morosity porosity serosity torosity
caries carious carouse curios curiosa scariose scarious cars cris