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.
patriate patriot pattered putrid pottered puttered puttyroot petard
patriate striate deuterate deaerate reiterate federate outrate nitrate moderate meteorite maturate literate laterite quadrate iterate saturate derate attrite trite hydrate diorite nitrite outwrite rehydrate citrate siderite striata butyrate stearate dehydrate titrate