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.
redefy reedify ratify ratafee
defy redefy def deaf defi deify edify codify modify nidify reedify
rede red redia redd ready readd read rued freed brede cred creed greedy preed dreed uredia rediae reed redo reedy rete ride rode rodeo rude bred breed ired credo greed greet reread treed uredo