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.
wads woads wades wadis wadies weds wats waddies whats weeds watts whids woods waits wides woodsy widows wheats widdies woodies whydahs whidahs wets wits wots weets whets whits wites
ads lads chads wads tads deads roads rads naiads kneads meads mads loads leads quads bads goads gads cads heads fads beads pads reads dads duads toads woads shads
wad waddie waddy wade wadi wady