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.
feoff feoffee fief fave fife five
dieoff feoff eff off boff boffo howff coff pouff doff teff toff toffy