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.
refill refile refall refell refel refly ruefully reveille refeel reflew rueful refuel revile reflow ravelly reavail ravel revel rival reveal rifely ruffly ravioli revalue
fill refill fil uphill defile fillo civilly puffily fille huffily befell beefily villa vill full foil filo filly fell file fall dewfall daffily reveille refell fila refall refile evilly befall villi fail faille goofily weevilly
ref reef reefy reif reify reive review dreigh tref trefah