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.
primos prims primes promos primas primus primsie paramos proms prams perms praams proems premies premiss primacy promise premise permease preemies promisee hyperemias
primos ramose prims primes paramos grumose crambos curiums brumous firms bromos brims bohriums biramous yttriums surimis chromos promos berimes ramous cormous ceriums primus biramose primas grumous crimes grimes bariums rimes rimose rimous rims romeos chirms trims chromous
prim prima prime primi primo perm pram premie prom promo