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.
wackily weakly waggly weekly wiggly waggle wiggle
cockily wackily muckily luckily tackily ickily pockily quickly cheekily packly hokily sickly leakily pawkily feckly gawkily jokily fickly pokily quakily hackly knuckly shakily
wack wacke wacko wacky whack whacko whacky