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.
trolly trolley troll drolly trill truly triol trull droll drooly tearily trawley tirl terrella trial trail drill trawl dryly drool drily direly dourly drawly torula dearly dariole torulae hydrilla
brolly drolly trolly cruelly morally neurally payroll reroll serially aurally droll surreally drooly trolley roll rally chorally really roily areally poorly aerially orally narrowly growly criollo corolla gyrally jurally girolle virally frailly frilly rurally troll shrilly
taro tiro toro trio trow troy tyro strow stroy