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.
duads duds dads dudes dadas dados deads dadoes tads daddies dauts toads dawts ditas dates datos doats didos duets dodos duits deeds didies todays dodoes duties didoes dattos diodes dauties teddies deutzia dowdies dawties duteous doodoos toadies doodies toddies tedious tatouays dits dots tats teds tods tuts
duads quads ads qaids leudes caids aids kadis naiads pads guids adds readds ouds quids sades gauds bawds kudus judos ados bauds muds loads roads tatouays shads mads chads wads dadas wades udos saids duds dads jades cadis bads suds mauds nadas lauds gadis rads lades goads cades raids buds quods rudds heads dudes cuds nudes wadis kudos toads beads judas cads sadis fados gads fades maids feuds hades shades gudes leads puds padis naiades lads kneads reads ludes fuds fads sudds woads sudsy meads dados deads leuds qadis tads utas yauds
duad dad dud dada daddy dado dead duddie duddy dude quadded dadoed duded