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.
chiller chillier choler cholera sheller shellier shalier shoaler shoalier
filler hiller miller giller chiller tiller willer iller biller siller killer hellery jollier ceiler puller collier millier hailer jailer muller sailer coiler queller oilier holler mailer roller fullery loller veiler shellier chillier huller fueller nailer luller woollier rallier toller raillery helleri hillier faller viler wilier tailleur poller pillar fuller seller teller dallier knoller heller filer pallier sallier dueller baller boiler tailer culler gallery bullier miler roilier railer taller sillier feller caller bailer duller moiler toiler tallier tiler wailer dialer dialler oiler sheller yeller
chilli chill chilly challa challah challie chally chiel chile chili cholla shill achillea