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.
medley meddle madly medal medially medullae muddly mutely mettle module medial motley meetly muddle middle meatily modally moodily muddily medulla metal modal model motel metol meatal moduli modulo motile mottle mutuel mutule modioli mutually
medley ridley diddley daddle caudle motley buddle piddly fiddly ruddily beadily bawdily gaudily muddle widely cuddle reedily tiddly deadly idly noddle needily noodle aedile huddle madly shoddily wheedle toddle doodle badly bodily seedily sadly puddle rudely peddle reddle goodly headily paddle lewdly boodle edile raddle module heddle beadle waddly coddle ladle fuddle needle dele poodle dale muddily muddly nudely cuddly moodily riddle readily puddly meddle audile giddily nodule oddly piddle dole duly middle ruddle idle loudly saddle redly padle sedile odyle dawdle doyley addle diddle fiddle diddly dowdily sidle tidily waddle rowdily weedily widdle godly shadily yodle
med mead meadow meadowy media mediae medii meed