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.
weariless warless wireless whirlies whirls whorls wooralis
weariless riles fireless varioles hairless heirless ireless gearless juryless furless carrioles cureless oarless peerless darioles rilles cheerless carioles tearless fearless grilles trailless earless warless tireless doorless zorilles braless orioles coreless carless careless airless barless berryless wireless shoreless