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.
deans dans dens dawns denes dense denies dienes danios dueness tens duennas dons tans dins duns tains dines dunes donas downs dynes tansy teens donsy dance tense dinos tenues donees donnas tenias tennis tenuis teensy tineas tauons donsie tenuous tennies tannoys taenias dunness donnees deionize dinghies tonneaus tins tons tuns
beans yeans jeans weans leans means deans peans queans paeans ens faenas aeons fawns bens fauns lawns lens pawns awns genus koans hyphens kanas gens ains beanos naans fans anis peens banns hymens ansa canes benes cans dense lenis wrens mains canso loans guineas lenos yawns nanas tens wains dienes sense scenes tineas tans sans weens queens wens whenas teens chains dens hyaenas yens dans wans penes unease rains rouens nans cains pens reins hygienes sains mensa pianos lense llanos kaons pans manse guans vanes anas manes hyponeas peons pians menus hansa venus banes fens keens mense sensa hanse veins liens hens manas foehns kains dawns vans lanes pansy janes lianes guanos manus veenas lenes bans gains manos kenos kens neons pains uneasy lauans fanos eons kanes nenes roans anes miens cense peins lianas penis zeins paeons anus mans fanes tense sanes denes weensy ranis panes scenas moans tansy ruanas wanes tonneaus wheens whens teensy sheens tains hyenas genes yuans
dean dan den danio dawn dene deni deny diene duenna deaden detain detainee