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.
tattily tautly tattle dottily detail tittle tiddly tidily totally tidally doughtily dotal tidal total title deadly diddly dottel dottle tootle diddley dowdily
fattily tattily ruttily nattily cattily chattily pettily dottily knottily nuttily wittily goutily nettly stilly doughtily meatily sootily rattail cattail coattail rattly haughtily til
tattie tattoo tatty tittie tutti tatted tattooed tat