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.
dowdily dottily doughtily deadly dawdle tidily diddly tiddly doodle diddley dedal dotal daddle daedal detail diddle dottel dottle toddle tattily tidally totally
bawdily rowdily dowdily headily shadily ruddily tidily daily dilly doily beadily bodily giddily lewdly moodily muddily needily readily reedily seedily gaudily weedily shoddily