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.
hadal hiatal headily heddle huddle haughtily
hadal dal dual dial deal dale dahl ladle audial natal medial nodal pedal radial redial zooidal deadly tidal meatal beadle badly medal feudal hiatal ideal geoidal caudal madly fatal modal nidal padle pedalo ratal sadly daedal dedal hyoidal
had hade haed head heady khadi