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.
gurneys guernsey guaranies groynes carneys grayness greyness goriness grannies greenies curns grins guaranas grans guaranis queerness greenness grains crones greens querns groins kernes cranes groans corneas garrons carnies currans cronies corneous crannies currency kirns corns carns karns kerns crowns croons kroons cairns cornus careens carinas cornice coronas korunas
barneys carneys tourneys journeys gurneys terrines terranes dourness queerness serines furanes boranes pyrenes prunes brines drones ternes dearness irones nearness marines corneas ernes byrnies gyrenes trines urines sheerness farness taurines fairness burnies cranes murines sourness runes carnies pyrones purines poorness dourines liernes sciurines neurones neurines terrenes arenes kernes crones bournes guernsey serenes harness trones chorines shrines