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.
barretor barrator barretry barrater barratry barter boarder bordure breeder bourtree bordereau birder border
barretor pretor hydrator sartor orator narrator curator creator gyrator heritor feretory ferreter aerator barretry barrator rotor retry retro praetor retore deaerator ureter
barred barret barrette barde bared berretta birred birretta burred