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.
monetise monetize mantis mounts montes mondes minuets monades monodies mantissa mints monads mantas mounds mantes mondos manats minutes mentees mehndis manitus mantuas mannites manatees maundies manteaus maenades hymnodies mends minds maunds menads
monetise monetize nineties sanitise sonnetize
moaned monde monied monte mooned mount