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.
seisins seizins sessions sasins scissions sissiness seasons cessions sassiness sissyness sozins sozines siziness sauciness zazens
seisins raisins sins poisons caseins ficins fissions foisons fusains hessians essoins cousins seizins cassinas quassins lysines missions sains ricins cessions scissions eosins eosines cassinos cuisines casinos puisnes passions osseins lysins basins liaisons sines cassines bisons sinhs sinus resins rosins sasins cosines paisans sessions