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.
radial radiale radialia radially redial readily ratal retail ritual raddle radula radulae rowdily reedily ruddily rattail ritually ratel redly ridley rutile rudely ruddle reddle riddle retile rattly rattle retally ruttily
dial audial redial medial radial dal pedal bodily coital aedile feudal ideal headily edile sedile dedal modal weedily gaudily geoidal readily reedily ruddily seedily daedal dowdily tidily chital shoddily tidal shadily hadal audile dale nodal needily moodily caudal dill dual bawdily diol rowdily zooidal nidal deal deil radiale pedalo beadily vital giddily diel medal dahl muddily hyoidal
radii radio rad trade rarity krait grad raid raita read readd ready redia rediae braid irade road grade roadeo orad roadie trad brad trait