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.
masa massa mas mays mesa moas maes maws mass masse massy miaows missay miaous mus mis mos mess moss mews muss moos mazy mows maze muse mise miss miso mace moues maize meous mosey mouse messy mossy moose missy mousy mosso meows mussy