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.
direly dirl drily dryly drolly drooly drawly dourly dearly tirl droll drail dural drool drawl drill truly derail trolly dariole tearily trawley trolley hydrilla terrella
barely direly rarely rely sorely merely yarely purely surely irreal gnarly sorrily burley merrily ariel cruelly leerily sourly burly quarrel ruly curly carrell airily furrily virelay verily nearly loreal surly dourly relay choreal cheerily charily whirly warily truly dryly parley hoarily dearly pearly jurel riel fairly hurley laurel greyly gruel morel parlay knurly eerily sorel carrel girly ferly hurly sorrel fierily boreal ferrel queerly reel barley oriel cereal gorily sheerly saurel early hourly areal aerily poorly parrel wryly creel freely cruel real surreal cheerly marly drily tearily ureal wearily wirily charley barrel yearly
dire dairy dare dere diary dore dree drew dure tire dietary dieter