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.
fiddly fiddle fitly fuddle fattily feudally fatly featly feudal futile fatally vitally fauteuil
fiddly piddly cuddly diddly oddly tiddly puddly waddly muddly rowdily deadly noddle madly needily duly seedily redly piddle moodily saddle muddle paddle ridley goodly raddle puddle reedily reddle ruddily rudely sadly daddle diddle cuddle toddle widdle beadily shadily loudly waddle coddle buddle idly riddle diddley dowdily gaudily lewdly readily peddle muddily huddle badly giddily middle godly nudely heddle ruddle headily fiddle bodily addle medley fuddle bawdily tidily weedily widely meddle shoddily