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.
mensas menses manses meannesses menaces minces minuses mannoses
mensas hansas unsays nauseas naysays hanses cansos gainsays lenses menses manses rinses censes census senses zanzas tenses chainsaws
mensa mense mensae menisci amens muns mons miens menus meinies menace means meanness meanies manse mans omens