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.
labial labially labile label liable labella lobelia lowball libel lobule libelee libellee
labial tibial bal bill cabbala sabal reboil pibal nobbily cabal baal bail bale ball bawl biali aboil waybill shabbily lowball bile bubal kabbala habile labile bialy bubale sawbill robalo rebill chubbily tubal nubile mobile boil qabala kabala cabala jubile shoebill
labia lab blab blabby flab flabby slab