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.
cussos cusses kussos cuisses koussos cassis causes causeys gausses quasses gussies caseose guesses cassias quassias casus cases casas coses coseys cosies gasses guises kisses casease caseous
cussos bassos lassos kussos koussos sos passes tasses misos lyssas sisses resows pisses disses byssus gneisses massas masses missis cassis cesses lasses gneissose pusses susses chesses chassis wusses tussis tosses dosses wrasses missus sasses mosses posses pisos passus paseos musses pesos kisses cuisses biasses gasses gessoes loesses basses esses misses guesses jesses nesses losses josses sows asses messes mousses psoas bosses lassoes quasses fusses busses hisses soys sous fosses lassis fossas fesses gausses cusses tusses wisses chasses chausses yesses
cuss cusso cassia cause causey coss cues cuisse gussie gussy kusso ecus