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