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.
ureter
ferreter ureter greeter crater brighter irater rioter rotter krater ratter curter courtier quartier fretter artery fruiter pearter carter prater brattier heartier fritter barrater shirtier charter rooter rewriter troutier triter grater tireder tarter rater darter wartier rootier prettier ritter barretry porter grittier garroter grouter parroter router frater frettier hurter carrotier retro trotter retry partier critter courter groutier cowriter barter narrater fruitier reutter retear barretor writer rattier frotteur praetor grottier bruiter gritter perter garter pretor treater artier sorter garotter purtier dirtier tartier breeder ruttier quarter charioteer chertier greater shorter