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.
misaim miasm miasma mazuma museum
misaim sim same seam sima hassium caesium passim cesium sesame
mis masa mesa miaous miaows mise miso miss missay missy amias amis amiss