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.
pias pis pas pase pies pois pass paws pays piss piso peas poise pease paisa pious passe pizza paise peise pause paseo passee piazza piazze psi pes pus pews poos pees peso puss pehs pows pace pice pose hyps posy pacy psoae peace hypes psoai piece posse poohs poesy pacey hypos pussy
bias pias raias rias chias as is