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.
monitory monitor monetary minatory mentor montero mounter miniature mantra minter mintier minuter minaudiere mender minder
vanitory monitory punitory nitery genitor gyniatry janitor minatory monitor sanitary unitary wintry
manito manitou manitu monied monte mount