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.
achier ashier ashore
achier tetchier catchier patchier poachier cashier dishier touchier beachier bushier leachier pouchier shier rushier reechier bitchier ashier witchier itchier dashier chichier beechier peachier gushier meshier pitchier cushier techier botchier washier pushier mushier fishier butcher etcher masher rasher voucher matcher musher gusher coucher chirr notcher usher bitchery quasher botchery ditcher hatcher gasher wisher shire chiru basher posher tocher lasher hatchery lechery botcher fisher cosher busher nosher ochery cutchery chiro shoer hitcher rusher richer patcher mishear reacher batcher cheer pitcher peacher shirr mouchoir teacher kosher butchery catcher fetcher coacher mosher choir echoer sheer gaucher toucher cochair lecher josher fishery chair ocher poacher kasher pusher pisher dasher cheshire leacher washer lusher moocher shear tushery watcher witchery shusher