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.
suttas suttees stays stoas suits setts suets satays suites sautes settees suds sits sets sots stoss sates sites saids sties sudsy sudds soots sades seats stows sadis situs satis stews sodas zetas setose setous suedes sayyids
bettas lyttas pittas suttas cottas tas netts mottos tets ditas riatas bitts batts katas tots mutase pietas matts tads stays tuttis lattes teas tats shotts chotts cheetahs utas tuts tits dittos buttes dattos mattes satays rotas reatas putts fouettes ghettos stoas lotahs mottes fetas litas mitts iotas botts botas lotas taos jotas taws lottos quotas rottes betas etas zetas biotas setts fyttes motts mutts pottos raitas butts ottos getas tass taus pitas lottes watts chetahs shittahs yetts
suttee sutta saute sett settee suet suety suit suite