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.
needle needily nettle noddle nodule noodle nidal nodal neatly nettly nudely nodally
needle wheedle padle sedile pedal middle muddle meddle puddle piddle reddle coddle ladle huddle ruddle dale fiddle wedel paddle steelie edile stele fuddle daedal buddle dedal boodle diddley aedile toddle noddle widdle riddle cadelle noodle dele sidle peddle module beetle medley raddle poodle redly cuddle medal idle saddle caudle ridley dole odyle stelae telae daddle heddle dawdle addle diddle audile doodle tele waddle nodule beadle bedel yodle