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.
porously prosily parsley perusal pursily prissily presale presell pricily parasail parcel
furiously curiously seriously porously variously crousely prosily morosely grossly crusily crossly carrousel carousal erosely arousal rosily rearousal carousel
porous parous porose sporozoa uprouse