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.
medullas medals meddles modulus medials modules medleys matelasse motels metals modals metols models mettles mutuals mutuels mutules mateless meatless metalise modiolus metallize
medullas doulas dulias dulls tulles cutlas latillas patellas radulas cedillas cedulas stellas stulls
medulla medullae medal meddle medley module moduli modulo