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.
vilest violist vealiest fliest villosity volost fellest foulest fullest falsetto filicide phallist velocity
lest molest tallest coolest dullest realest halest vilest blest shoalest foulest fullest fellest chillest illest palest realist lust lowliest volost hilliest jowliest niellist glost fliest oiliest teleost violist mealiest wiliest pollist vealiest jolliest clast list bluest holist ballast celesta paliest dialist silliest wooliest nailset cellist palliest sciolist alist least diallist ruliest lost coaliest roiliest dulcet holiest blast duelist relist whilst shaliest gluiest last sliest dualist duellist celeste delist woolliest eeliest chilliest phallist shelliest bulliest shoaliest
files vails vales veils vials viewless villas villose villous vills villus violas viols voiles voles evils