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.
lipoid lipid lipide lipped loped lapped leaped looped lopped louped
lipoid pod dipody spied repaid poppied opioid lipide lipid cupid copied vapid epode bipod apod pood pied paid hypoed rapid sapid spode tepid
lip lipa lipe lippy blip flip flippy clip slip slipe slippy