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.
hotly hotel haughtily hiatal headily
hotly featly cattily godly haughtily footle hotel outlay rootle pettily ruttily neatly sotol notal knottily dottily motley tattily meetly tootle goutily wetly lately wittily cutely fitly fattily nuttily dolly dooly goodly botel fatly doyly patly rotl rattly sootily nettly doily dotal nattily doughtily mutely tautly motel total quietly whitely meatily chattily