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.
woolier woollier wooler wilier waler wailer whaler willer wheeler
woolier holier lier jowlier pallier millier cooler collier coalier oilier howler foliar hillier haulier volery vealier poler knoller lowlier pooler relier roller sallier slier tallier toller wilier gluier foolery chillier cholera shellier shoalier fouler belier loller gaoler woollier choler moiler eelier mealier bullier bowler bolero boiler holler flier jollier coaler coiler shoaler shalier colliery oiler fowler palier plier poller rallier roilier rulier sillier dallier toiler tooler wooler yowler