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.
wos woos woes wows whose whoso was wis waes wise wees ways waws whys wuss wiss ywis wazoo whews wheys woozy wussy