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.
miasm miasma misaim mazuma museum
miasm chiasm ism gismo jism miasma nizam seism deism disme chasm chasmy chiasma chiasmi
mas mis amiss amias amas missy maes masa mass massa masse massy maws mays miaous miaows mise miso miss missay moas amass amis omasa