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.
depurate departee deportee depart deport diapered typewrite typewrote
depurate suppurate pirate prate biopirate cooperate operate reoperate separate uprate