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.
medially medial modally medal medley meatily muddily medulla moodily mutually medullae modal metal madly muddly meetly meatal meddle mutely modioli model motel metol mettle moduli modulo motley mutual mutuel
radially medially tidally ritually dally dilly dually tally fatally feudally vitally ideally caudally coitally modally mutually nodally retally stilly totally