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.
rarefy rarify reroof
torrefy rarefy ref verify whereof reef tref rarify horrify reefy reif reify brief aerify garvey jarvey grief purify purvey hereof surfy terrify curvey survey torrify turfy shereef
rarer rare urari darer roarer rearer parer pareira orrery carer career farer barer arrear airer roar rear urare yarer