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.
parcel parasol parsley presell pricily parasail perusal presale prosily pursily porously prissily
carcel marcel parcel tercel tiercel fiercely hirsel morsel dorsel hydrocele triscele wurzel
pairs parries spars spares pricey price pears parse pars parrs parous paras paris paries pariahs pareus pares pareos pricy sparrows sparse