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.
medico medic medick modica meiotic maieutic medaka miotic
medico deco dick iodic geodic ludic medic medick modica odic pudic sodic zaddick zodiac zydeco
media mediae medii med mead meadow meadowy meed midi modi