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.
ratel ratal retell rattly rattle rotl rattail redly rutile radula radial retail redial reddle raddle rootle retile ritual retool rudely radiale radulae readily reedily retally ruttily radialia radially ritually
ratel boatel tel outtell stele steel featly retell patly fatly hiatal whitely ratal mutely meatal lately cutely hotel natal botel fatal teal stela steal betel mutuel motel kittel luteal neatly teel tela tele tell tael dottel chattel
rate rat drat prate orate grat crate irate frat bratty brat rote rite riata rete reata ratty rato raita grate prat rared urate