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.
mod mode mood modi mooed moody mot mid mud med mad meoued miaoued midi meed moot maid made moat mott mead mote maud motey motto motte middy medii media muddy mayday meadow mediae midday moiety