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.
donsy dons downs donas donsie donnas donees donnees duns dens dans tons dins dense dynes denes dines tansy towns dunes dawns tones dinos deans toons tonus dienes danios tauons tonnes teensy denies townees dueness dunness toonies duennas townies deionize dinghies tonneaus tans tens tins tuns
donsy sonsy ons muons monas noisy mons quoins eons conus onos hysons loons neons koans nouns bonus aeons conns joins nosy goons pions peones sones ions wons unsay boons towns tonus linsey tones tauons downs bones roans zoons dons onus foins loans paeons gainsay coins pons nones cions monos moans moons johns tansy nonas hons unnoisy fohns kaons gowns ones peons jones cones knowns noons donas coons phonos tons hones fons quinsy pones leones loins pansy scions lions owns weensy nosey sons phons zones phones poons cons teensy toons yonis
don dona done donee donna donne donnee down downy udon