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.
mitoses mitises mitosis mutases metisses meatuses matzos matsahs matzohs midsize mediacies matzas matzahs medusas
ketoses lotoses mitoses ptoses tootses situses outsees footsies mitosis fatsoes foetuses mitises lotuses ketosis cutises coituses hiatuses dowses doses touses tosses fetuses quietuses mutases meatuses patsies betises potsies dosses poetises ptosis douses stases tootsies