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.
frizes friezes frizzes frizzies frises furzes freezes frisees farcies fraises farces forces varices frasses foresees ferocious pharisees verses phrases varuses viroses virosis viruses pharoses phereses pheresis
braizes prizes frizes heroizes crises rerises reseize freezes farcies frises frizzes razees resize furzes irises phoresies razzes heroicize orrises chorizos derrises varices crazes cruises graecize grecize lorises mercies morrises orrices parises praises prices prissies bruises prossies friezes brassies cerises hybrises razes carices merises murices krises lyricize curacies grazes crazies crozes frizzies piracies reraises trices rices raises prises brises breezes braises brazes arrises arises rises fraises heresies prezes sherrises
friz frizz frizzy ferias fraise fries frieze frise frisee froze furies furioso furious furze furzy