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.
ideal ideally idle idly idol idyl idyll
deal ideal dal del feudal hadal deli geoidal dial luteal dahl medial dele deil bedell nidal dale pedalo radial rudely setal zooidal dedal wedel chaetal hyoidal nudely modal duel dual foetal dell teal caudal audial medal diel model fetal nodal bedel metal pedal petal redial seidel steal daedal tidal widely hyetal yodel