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.
tepas tapas tepoys tepees tips taps tups teepees tops teapoys deeps topis topaz typos tipis topos dopas types tipsy typps tapes tapis topes depose taupes topees tawpies toupees diapause toepiece daps dips dups
tepas pas cowpeas paps papas peeps napas neaps leaps pupas peps repass keeps repos keps nipas reps dopas kapas zeps chuppas pass sepias paws spas capias ceps cheeps peas pease pias appease weeps chapeaus pase repays neeps repps kepis beeps kappas reaps pepos poppas nappas koppas lipase pawpaws opahs papaws copays pays tapas veeps epos chuppahs cheaps wheeps upas bypass deeps spays cuppas jeeps spaes heaps seeps huppahs cepes yeps
tepa tapa teapoy teepee tepee tepoy step steppe