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.
foulest fullest fliest fellest vilest volost falsity violist vealiest felsite fleeced flossed
foulest lest eeliest bulliest bluest blest least jolliest fellest coaliest gluiest oiliest mealiest realest ruliest celeste sliest dullest teleost wooliest chillest shaliest shoalest paliest fliest fullest palliest vilest halest hilliest holiest illest jowliest vealiest coolest lowliest palest molest roiliest celesta silliest dulcet tallest wiliest woolliest chilliest shelliest shoaliest