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.
mudcat medicate medicaid midgut mitigate
mudcat ducat didact dedicate duct addict adduct edict educate educt viaduct medicate petticoat radicate readdict redact redcoat reeducate deduct woodcut