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.
menisci meinies meanies menus mensa minis means munis mense miens manias monies hymens menace mensae minnies muns mans mons meanness moans minus moons monos mains monas manus manas mines mincy minas manos manes hymns muons mynas mannas moneys mynahs minnows monoecy