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.
tussah tusseh tass taus toss tuis tasse touse tassie tissue tissuey tas tis
tussah assai assay bioassay essay fossa fossae cassia quassia lyssa massa messiah missay ossa ossia tusseh