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.
radios radius rads roadeos readies roadies reads redos ratos roads riots raids rodeos redoes readds raitas redias rowdies riotous rods rids reds rots rats redds reeds rides rodes rotos rotes rotas roods redes roots rotis rates routs rudds rites writs reatas reties riatas rottes routes writes
adios radios audios dis dos fuddies muddies cuddies beedies hoodies duos bodies noddies eddies kiddos laddies boodies eidos fidos roadeos meadows riots redias roadies dies neddies iodous hoodoos readies medius koodoos daddies didoes shadows widows wadis waddies todies toadies tedious dowdies doodoos dodos dits sadis lidos dados cadis goodies rowdies midis bawdies redoes nodose baddies gaudies paddies nodous doss judos giddies dais qadis vadose padis ladies biddies medias gadis howdies middies gaddis caddis foodies ados eddoes iodise diss kudos dows fados voodoos caddies dose bidis kadis nudies vodous cedis rodeos kiddies soddies buddies didies redos videos odious does radius doodies kiddoes teddies dadoes tidies toddies didos udos wadies dodoes widdies woodies dots shoddies
radii radio rad trade rarity krait grad raid raita read readd ready redia rediae braid irade road grade roadeo orad roadie trad brad trait