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.
radulae radula raddle radiale radialia radial ridley rutile rattle riddle reddle ruddle readily radially ratel ratal redly rattly redial ritual rootle retail rudely retile rattail reedily retally rowdily ruddily ruttily
radulae doula dulia medulla medullae module nodule radula cedula