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.
shoreless shorls chorales cheerless chorals shrills charleys charlies
ireless fireless careless tireless shoreless cureless coreless wireless cheerless carless weariless berryless crewless areoles morelles tearless peerless hairless barless treeless heirless braless juryless furless fearless reales relies oarless aureoles doorless creoles gearless earless airless warless