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.
tidier titer tedder titter dieter dotier dottier deedier dietary dowdier tattier tetra deter dater doter titre toter tater doughtier totter tetter touter deodar teeter dodder deader tawdry dotter tauter tooter tatter deodara doddery tottery tuatera daughter tattooer
beadier readier needier hoodier muddier gaudier seedier rowdier dowdier shoddier shadier woodier tidier leadier faddier moodier headier deedier weedier giddier bawdier ruddier reedier matier dire heeder nattier goiter adder feeder dere doughier citer lewder deader rattier leader puttier lader powdery battier louder poutier heder aider nodder judder padder cottier raider seeder gadder mudder metier miter biter sadder chider bittier dottier rudder tedder zootier titer wadder whiter weeder widder wittier chattier redear shittier shudder doddery chudder pitier rider beader goutier ridder powder ruttier knottier badder waiter dear ceder kidder footier ruder sootier tier bedder guider fodder hider cider haughtier bider wader niter gaiter pottier lieder loiter nadir deer nuttier gaudery needer nuder coder budder lauder jettier odder reader midair redder guttier boudoir pettier cattier hootier gnattier voider codder doer writer nettier bidder cyder ladder fattier doughtier baiter kiter madder loader nittier eider rootier meatier mitier rudery fader cheder suiter whitier dotier tattier seder udder wedder kneader peatier dodder wider header shader chowder shedder liter shuddery
tidied didie teiid tide tidy tied titi idiot iodid iodide oidioid tided