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.
merisis merises mercies morrises merces murices marses mirzas
crisis merisis virosis irises crasis crises krises lorises orrises morrises parises pyrosis cerises xerosis diaeresis diuresis frises pheresis hybrises brises arsis arrises arises risus merises rises neurosis paresis prises rerises sorosis derrises dieresis sherrises