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.
mor more mora moor moory moray morro morae moire moira mar morrow moirai mir mare mure miry murr mair maar mere mura miri mara mire maria marry mbira merry murra murre murry myrrh marrow murrey