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.
roperies ropers rapers rapiers rappers reapers repress reprice reprise rippers wrappers rapparees reappears repairs repours repros
aperies moperies japeries peeries duperies poperies cooperies roperies fopperies naperies peris peeress spurries peres apiaries perries pries paries pauperize parries topiaries
roper ropery raper riper ropier groper proper propria