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.
toucher touchier tocher ditcher teacher techier tushery tetchier dasher dashier dishier
voucher coucher gaucher toucher witchery leacher beachier lusher poachier pusher peachier pitchier ochery patchier moocher notcher botcher etcher rusher chichier cheer lecher tetchier achier itchier echoer euchre butchery butcher busher botchery botchier teacher usher touchier bitchier beechier watcher bitchery hitcher hatcher catcher catchier batcher coacher cutchery lechery leachier gusher hatchery musher reechier witchier fetcher matcher ocher patcher peacher pitcher poacher pouchier reacher richer ditcher techier tocher shusher
touch touche touchy douche teuch