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.
fordone foredone fortune fourteen verdin
fordone cardoon teardown sordine pardon redon redone bourdon foredone cardon radon guerdon cordon gueridon lardon lardoon lurdane nardine pardine sardine sourdine turdine