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.
roadeos rodeos roadies roads rodes radios rods rads rowdies readies ratos roots roods raids rotas reads redos rotes redes rides rotos rates rottes readds radius routes redoes riotous rats rids rots reds rets rudds rites reeds riots rotis routs redds raitas reatas redias reduce reties retuse riatas writes
roadeos ados shades wades dados sades roadies radios meadows readies naiades ladies lades cades jades hideous adios videos vadose fados fades aedes aides hades rodeos dadoes toadies wadies shadows dos ads
roadeo road rode roadie rodeo broad erode irade grade roared trade trode rad rod