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.
villainy villain villein violin valine violone flan fallen feline felony
villainy lain liny lawny liney blain elain villain plain slain delaine lin
villa villae vill villi viola voila evilly