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.
tidal tidally tidily tiddly dedal total dotal title tautly deadly daddle daedal dawdle detail diddly tattle diddle toddle tittle diddley dottily tattily totally doughtily
geoidal tidal hyoidal nidal zooidal dal audial dedal dial pedalo nodal idle radiale modal medal caudal dahl dale chital medial deal idol dual seidel idly sidle daedal redial hadal idyl feudal pedal coital vital radial ideal
tide tidy tied today ideate iodate nidate tided tidied