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.
hurdle hurtle hardly hurriedly hardily hordeola horridly hierodule hartal heartily
hurdle curdle girdle chordal weirdly turtle treadle myrtle lairdly griddle raddle reddle riddle ridley ruddle bordel bridle kirtle fardel lordly hardly dartle hierodule treddle hurtle urodele cradle whortle buirdly chortle
hard hardy herd horde hurried hurt