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.
primas prims primus primos primes primacy primsie proms prams perms permease praams promos proems hyperemias paramos premies premise premiss promise preemies promisee
primas rimes ceriums prims primes marimbas hyperemias rumbas aromas bariums karmas berimes bohriums trims taramas uraemias dioramas chirms surimis brahmas brims curiums primus primos rims kormas neuromas grammas gramas grimes firms crimes viremias traumas dramas yttriums dermas uremias seriemas chromas
prim prima prime primi primo perm pram premie prom promo