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.
citer cider suiter sitter sitar steer stere cyder ceder cedar cedary suitor stereo souter seater setter seedier sootier zootier hysteria star stir
biter goiter kiter baiter suiter liter loiter titer waiter citer writer whiter gaiter niter miter goitre bawdier footer meteor getter tear fetter hooter headier vetoer netter faddier beater latter better voter cutter litter gaudier hotter ruttier hater cottier nitro couter eatery patter eater nutter leadier sitter peatier mutter guitar doughier rootier later rater fitter mitier rooter quitter raider giddier rioter meeter mooter phatter haughtier looter cattier potter coater aider tuatera water wider dottier utter suitor deedier watter wetter whetter bittier reedier whitier titter dowdier rattier woodier chattery cheater tauter chitter dater shatter shittier shooter souter shutter tetter reutter setter tatter ratter pottery muddier footier knottier tottery oater nittier pettier needier moodier hider toter pitier seater dieter dotier puttier tier lotter meter hitter pouter mattery eider bootery knotter powter zootier cooter sitar jitter rider daughter rowdier heater voider knitter guider hauteur retear poutier rotter hootier nitery outer nattier cotter nettier readier cautery natter littery nuttier guttery totter hatter fattier battery buttery gater letter meatier boater mater quieter auteur cuter peter bitter neuter cater litre cattery batter butter matier matter goutier feater cider gutter metier mitre jittery jotter ruddier jettier gnattier vetter steer fatter tattier stere putter muter pater guttier pewter nitre ritter battier bider petter doughtier pottier sootier beadier quoter hoodier lottery dotter whitter tater noter touter uteri deter watery doter weedier tidier wheatear hetero titre tooter neater wittier chatter chattier teeter chider seedier shadier sheeter shoddier otter shouter router yatter