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.
measly measle mesally messily mislay muesli mazily masala mussily misally mousily missel mycele micell missal mislie mussel mizzly micella micelle muzzily mycelia mausolea micellae
measly sly basally basal slay causally gassily loosely basely measle basil mesally lousily mousily nasal noisily paisley pusley pussly sassily teasel weasel wisely misally sally queasily mislay busily easel easily fussily vasal visually bossily casually cosily messily bassly mussily nasally nosily piously pussley rosily deasil usually weasely cheesily
mas maes mems amass masa mass massa masse massy maws mays mesa mess messiah messy mews moas amas emes omasa