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.
dunes duns dunness dueness denes tunes dunce dines dynes dienes denies donees duennas tunnies dens dons dins tuns dans donnees dinghies donsy tines dense downs donas dawns deans dinos dance tynes tunas tones tonnes danios tineas tenues donsie donnas tauons townees toonies townies tawnies tennies tawneys deionize tonneaus tans tens tins tons
lunes runes dunes tunes uns fines coneys funs jounce tawneys faunas lanes ranees puns venues tines nonnews guns tuns benes fannies nowness dynes muons sunns nannies lioness bunas buns genies penes heinies ness fewness banes launce goonies gooeyness pines beanies feyness anes hones canoes monies jennies knees news minnies fauns lowness guineas hinnies wanes sines meanies tennies sanes noes muns keenness weenies tones saunas dunce whinnies wines woeness chines denies sheeneys shines shinnies shyness peones loonies conies jaunce tineas toonies ones johnnies pannes janes donnees townies rawness fanes scenes huns lunas lianes dunness koines ninnies lunies aeneus meanness gooneys sones nouns bunnies pinnies denes bounce nines tawnies gunnies vines munis peonies bennies townees looneys kines meinies tunnies pones renews seines zanies phones newness honeys bennes phoneys lauans quins cines joannes phonies vanes genes panes cones sinews leanness leones lenes ponies rouens funnies mines kanes nuns dines vainness coyness wryness gayness hyponeas donees duns lines dueness canes nenes hygienes pawnees pounce jones boonies punas bines runs bones manes suns guans ounce nones bonnes moneys zones whines wienies ruins tenues tunas tynes waeness zines tonnes wanness tauons sanies sonnies winoes sawneys chaines dienes shannies sheenies shinneys bunns shuns pennies yuans
dune dun dene dine done donee duenna dyne tune dudeen