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.
heavily highly huffily hovel
heavily wavily avail evilly cavil gavial reavail civilly savvily suavely weevilly weevily