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.
gluiest coaliest glost coolest gallused glissade gulosity clast closet glazed glozed calcite glaceed glassed glossed
gluiest holiest shelliest chilliest wooliest sliest ruliest palliest oiliest mealiest lowliest coaliest jowliest jolliest hilliest bluest vilest vealiest foulest fliest eeliest bulliest paliest roiliest silliest wiliest woolliest shaliest shoaliest