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.
dirams drams dioramas dramas dreams drums trams dorms derms tiramisu durums dermas taramas traumas dayrooms dormouse teraohms terms trims dermis tearooms yttriums
rams drams dirams jorams grams ihrams zirams forams prams crams trams marrams norms terms prims forums bermes rearms dreams dioramas caroms barms kermes quorums gorms forms praams kermis breams larums chirms worms firms trims harms durums arames ramus dermas fermis dermis gouramis gramas proms arms vermes creams serums rems karmas frames formes reams rims arums jorums vermis rums aurums derms dramas germs berms herms corms perms roms kormas ferrums paramos harems carroms dorms farms taramas brims drums roams warms charms choriambs
diram diorama dram drama dream dreamy