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.
priest prest presto purist preset purest poorest prost periostea prized prised priced prosit preside prissed pursuit pressed prostie praised porosity presidia parasite presidio parricide praesidia prussiate prosed prosciutti prosciutto pursed parsed perused pierced precede proceed prosody pursued peracid persuade
airiest wriest firriest tarriest miriest furriest wiriest fieriest goriest hairiest beeriest aeriest eeriest charriest wariest leeriest priest mooriest veriest weariest sorriest teariest burriest merriest hoariest driest chariest cheeriest leariest sorest fairest truest wristy merest erst barghest crista poorest tourist reset sourest forest sheerest purist aurist nearest querist resit turista tourista searest verst arrest presto purest barest crest resat direst rest christy breast preset reest diarist first rearrest barista grist surest dourest prest arista verist rarest aristo airest aorist wrist queerest jurist drest wrest touristy serest freest dearest lyrist triste yarest
pries peris sprees pipers pyres purees prissy prise pricy price preys pareus pariahs paries paris peres pareos piers pricey spiers apres puris prize priss pares prez pierce press prese presa prees praise pores uprise