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.
wordily worriedly weirdly whortle
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
word wordy worried worrit sword