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.
wedel widely weedily wheedle wetly waddly whitely
wedel bedel del duel widely steel teel rudely pedal needle model medal ideal betel bedell deli diel dele deil deal nudely redly seidel steely dedal dell daedal wheedle yodel
wed wade weed weedy weet wide awed owed swede sweet sweetie tweed tweedy tweet weeweed