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.
kermis kermes kermess kermesse kormas karmas kirmess crummies gouramis cramoisy gremmies corms grams gorms crams cramoisie gouramies creams grooms crumbs cremes gramas caroms carroms cormous corymbs crambos curiums grammas grumous quorums
fermis vermis kermis dermis rims roomies armies prims perms arums gremmies jorums gouramis warms barms trams surmise preemies derms rums kormas harems remiss drums charms uraemias terms dorms serums herms dermas rummies bermes brims larums proms norms kermes germs carroms crams gorms arms firms premiss aurums uremias ihrams berms ramies forams forums tiramisu vermes caroms formes grams karmas jorams forms roms crummies viremias farms harms premise drams prams gouramies rems rams quorums marrams hyperemias ferrums remise promise worms rearms surimis zirams corms premies dirams durums trims chirms