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.
cushier cashier gushier cosher gusher quasher coucher catchier cutchery kasher kosher gasher catcher coacher cochair gaucher gaucherie
shier fishier ashier gushier dashier pushier washier cashier rushier cushier mushier dishier bushier meshier botchier itchier leachier cosher busher musher kasher gusher masher pisher poachier techier kosher patchier fisher gasher basher lusher mishear pouchier nosher rasher witchier shear chichier rusher mosher posher tushery shirr reechier dasher quasher catchier shire bitchier shoer achier touchier pitchier beachier usher peachier lasher josher pusher beechier tetchier washer wisher sheer cheshire fishery shusher