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.
loudly lewdly ladle lately luteal
loudly fiddly badly bawdily goodly bodily feudal beadily ridley sadly ruddily deadly redly puddly diddly oddly tautly needily tidily muddily weedily idly shadily medley duly dully readily gaudily cuddly godly caudal giddily caudle reedily rudely rowdily seedily piddly headily diddley nudely dowdily muddly tiddly moodily waddly lewdly widely madly shoddily
loud laud glout cloudy leud load lode loid lout lude alodia aloud elodea elude flout clod cloddy cloud clout plod