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.
mousse mouse mousey muss moss muse moues masse moose mussy mosey mosso meous mossy mousy mus miaous mos moos mass mess mows miss mise moas meows massy messy massa missy miaows missay messiah mas mis
mousse use muss buss nausea lassie louse kusso posse passee puss guise reissue gussy fussy cuss rouse wrasse cause suss jesse douse causey tassie issei touse hussy house fuss wussy chouse gauss kousso mouse fosse issue bouse mousey mussy muse passe lessee masse quass poussie pause pussy reuse gussie fusee cusso ruse guess souse fesse dassie fossae tasse cuisse tissue fuse tusseh wuss chasse youse