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.
flatly fleetly floatel faultily fluidally philately fluidal fluidly volatile validly flotilla veiledly
flatly gladly saltily ciliately politely palatally palatal guiltily colloidally lately joltily philately fluidally floatel fleetly faultily dillydally
flat felt flauta flit flite float floaty flota flute flutey fluty flyte folate