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.
dawdle daddle doodle toddle diddle deadly daedal diddley dowdily tidal dotal dedal detail diddly dottle tattle tiddly tidally
dawdle buddle coddle beadle boodle audile peddle raddle poodle riddle noodle paddle noddle ruddle sedile muddle daddle middle diddle ladle doodle meddle waddle dole widdle addle dale edile ridley caudle fuddle fiddle heddle padle puddle piddle reddle nodule odyle needle saddle aedile module sidle medley dele cuddle diddley lewdly toddle idle wheedle huddle yodle
dad dada daddy dado dawt dawtie dead dowdy duad dadoed dawted