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.
palest paliest palliest placet pollist poloist pleased palsied palaced playsuit palisade pilosity placed pulsed policed pulsate poolside pulicide
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
pales palls spales opalesce poles plies please pileus pileous peles peals pawls palsy pals palliasse paellas palazzo palazzi palais palace pails paillasse piles pleas plews poleis pules opals spalls