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.
mercies merces merises merisis murices morrises marses morasses mirzas
farcies mercies frises frizes varices carices crises curacies forces krises merces hybrises murices merises orrises pierces precis prises rerises cerises derrises terraces traces truces lorises farces braces morrises boraces hyraces arrises arises rises rices graces races irises coerces brises cruces orrices parises piracies prices prizes cercis sources terces tierces trices sherrises