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.
frizz frizzy friz frieze frise froze furzy fries farci furze farcie furies frisee frouzy freeze fraise ferias frowzy faeries fairies ferries furioso furious firs furs
frizz razz friz frizzy prize chorizo