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.
hardily hardly heartily horridly hurriedly hartal hurdle hordeola hierodule hurtle
hardily tardily wordily tartily buirdly weirdly tiredly artily greedily cordial horridly heartily hardly broodily luridly lairdly torridly ruddily rowdily reedily redly lordly dirtily aridly readily
hard hairdo hardy hared harried hayride heard hoard