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.
defiles defleas devils defuels duffles dayflies devalues dewfalls devels duffels
files refiles defiles fils muffles riffles reveilles refills piffles filos befleas souffles baffles raffles failles fleas leafless roofless sawflies zoophiles dayflies defleas waffles shooflies fails coffles filles cuffless hoofless rifles reviles flews reflies mayflies ruffles fleys voiles beefless zoophilies foils flues floes flies flees fills duffles whiffles shuffles