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.
pariahs paras paris paries pars parries parrs pears priss pares peris parse prise pries puris pairs praise pareus prissy pooris parous pareos peeries perries purs pros prose proso pores pours piers peers prase preys prays perse price pyres pricy prese proas praus prees press praos purrs prows prize prosy pross purse pursy peres pyros hypers peruse porose porous pricey purees pursue peeress prossie
pariahs shariahs rias hoorahs cerias norias kerrias jarrahs gerahs hurrahs horahs varias surahs pharaohs ferias arias raias sirrahs dourahs yttrias torahs sharias ras