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.
fleer flier filer feller fuller faller fowler feeler fouler fleury fueler filler flir foolery fueller filaree fullery flare viler flora floor fluor filar flour flair florae floury flurry foliar valuer vealer veiler volery failure filaria vealier filariae
leer fleer lehr culler paler feller filler viler hiller helleri leery fuller mailer heeler jailer collier flier lier bullier bailer valuer miler railer plier lowlier hailer baler muller iller reeler howler clear fouler jowlier fueler vealier haleru coalier filer gallery puler wailer toller dallier tailleur teller whaler wilier seller tiller wooler woollier chillier cholera sheller duller shoaler yeller rallier haulier poller mealier ruler roilier queller knoller holier sealer taller millier dialer ceiler pallier gluer sailer oiler dueler sillier faller feeler lear boiler raillery poler luller haler eelier kneeler giller miller relier coaler fowler caller fueller veiler hauler coiler huller bawler vealer bluer biller galere palier bolero bowler volery hillier blear hellery fullery mauler heller jollier cooler foolery belier baller puller gaoler pooler rulier roller loller nailer holler sealery tallier mewler moiler celery peeler killer sallier oilier dueller slier dialler healer woolier realer tooler dealer taler tiler wheeler willer siller waler toiler chiller choler shalier shellier tailer shoalier yowler
flee feel file flea flew fley floe flue foley level levelly