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.
cuss cusso cuisse coss cues guess cause quass gussy kusso gauss kousso gussie causey cassia cos quassia cows koss case cosy guys coos coys casa caws kues cays kiss cosey cosie gassy guise kissy quais quasi quays queys
buss fuss cuss gauss muss puss suss wuss us