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.
rattle rattly rattail ratel ratal raddle rutile retile rootle ruttily radulae radiale rotl radula reddle ritual retell riddle retail retool redial ridley ruddle radial readily retally radialia radially ritually
battle dottle tittle settle nettle pettle bottle vittle wattle kettle kittle rattle shuttle tattle cuittle whittle mottle pottle little fettle guttle cattle mettle cuttle tele stele kittel dottel outlie nettly footle retile stale utile tootle beetle chattel stile wittol rutile mutule style rattly rootle futile tule tale title motley motile stole tole citole tile butle
ratty rat drat prat grate grat crate irate frat bratty rutty brat rotte riata reata rato rate raita orate prate urate