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.
surreally surreal surely sural surly serially saurel sorely sorrel sourly sorrily seral sorel cereal serail serial
really areally surreally rally gyrally serially aurally aerially frailly jurally virally cruelly morally neurally orally rurally chorally real rely