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.
mateyness matiness muteness meatiness madness meetness mootness matinees matins mattins maddens mittens maidens mutines mutinies moodiness muddiness mutons medians middens moutons muttons madonnas mueddins mutinous
mateyness dueness wideness wetness hiddenness cuteness quietness lateness leadenness liteness meetness muteness nudeness redness rottenness rudeness soddenness suddenness whiteness woodenness