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.
gaddis gadis caddis gads gaudies caddies gaits cadis goads qadis kadis gauds goddess kiddies cuddies caddice goodies cads gats gods gaieties gates cades goats qaids guids quads caids gudes goods gowds kiddos guides coatis caducei catties gateaus goatees keddahs kiddoes
caddis gaddis dis adds tidies dies medias giddies muddies middies diss audios caddies iodise kiddos laddies kadis gaudies howdies duds adios cedis odds woodies wadis readies waddies toddies noddies radius didies padis doodies redias foodies rowdies soddies daddies hoodies dais bawdies wadies paddies nudies readds radios toadies sadis medius neddies dads sudds dowdies dits bodies ladies rudds midis roadies gadis cuddies boodies buddies eddies fuddies baddies cadis redds biddies widdies goodies bidis kiddies qadis beedies teddies todies shoddies
gaddi gad caddie caddy gadi gaed gaud gaudy goad egad