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.
radiale radial radialia radially raddle redial radulae readily ratal ruddle ridley retile rutile rattle reddle ritual retail radula riddle rowdily ruddily reedily rattail ritually ratel redly rattly rootle rudely retally ruttily
radiale dale dial audial audile aedile edile medial radial redial sedile dal
radii radio raita redia rediae roadie rad