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.
momi mom mome mommy momma mamie mammie mum mim mem memo mime mama meme mumm maim mumu mamba mambo mamey mamma mammy mimeo mummy
mom mome momi momma mommy mm mo om