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.
medulla medullae medially medal module medley modulo medial moduli meddle modally mutually model motel modal madly metal metol meatal meetly mettle muddly mutely mutual mutuel mutule meatily modioli moodily muddily
medulla dull doula dulia dully medullae radula radulae cedilla cedula