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.
piracy pricy prays pierce pricey prosy pairs paras piers prase presa praos preys price praus proas pursy praise prissy pariahs
curacy racy piracy frays trace forays drays mercy pricy crazy farcy hurrays hoorays hearsay bewrays brays arrays rays race grays morays brace grace prays derays terrace trays
pair para parae pier prao prau pray proa apiary spiraea spire spirea spiry spray