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.
defat defeat deft daft deviate davit duvet deaved defied devote devout deified devotee toft tuft
defat eft fat deft fate feat fiat befit foveate heft hefty left lefty refit reft defeat caveat weft
def deaf deave defi defy deify deva