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.
promos proms primos proems promise paramos prams prims perms promisee primus primes praams primas primsie premies premise premiss permease preemies hyperemias primacy
bromos promos chromos crambos romeos cormous biramose biramous bromes brooms aromas brumous barrooms chromous caroms grooms grumous ramose dayrooms tearooms worms chromes rooms varooms proems rimose paramos neuromas grumose roams corms vrooms carroms ramous norms forms rimous proms dorms teraohms chromas gorms primos roms showrooms
promo prom perm pram premie prim prima prime primi primo proem