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.
hotrod hatred
trod hotrod tetrode dotard strode hysteroid retard petard outrode nitrid mitred metred meteoroid leotard turd hatred trot trode trad toroid hydroid droid outtrot putrid ritard steroid stroud tetrad chytrid