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.
redial radial radiale readily reedily redly radialia radially reddle ritual retail retile rowdily ruddily retally ritually ratal ratel radula rattly retell retool rudely rattail 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
redia rediae red uredo oreide cred brede radii radio read readd ready redd rede rued bred redo ired reed credo reedy uredia retie ureide