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.
formol formal formyl formula formally formulae firmly vermoulu vermeil
formol firmly formal formyl cormel normal ormolu dermal termly tremolo turmoil warmly wormil
form forme formee farm fermi firm foram forum frame from