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.
tussahs tussehs tusses tussis tasses tosses touses tassies tissues disses dosses douses tawses teases dassies
tussahs assais assays bioassays essays fossas cassias quassias lyssas massas messiahs missays tussehs