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.
chadri chador chadar cheder chider shader cheater shadier chatter chowder cheddar chuddar chudder chattery chattier cheddary chitter shatter shedder shudder shoddier shuddery
padri chadri dearie reader radar padre nadir kneader madre leader loader lader deader header fader beader hydria sudaria wader chador cadre chadar shader
chad chaeta chaetae chat chateau chatty cheat chid chide chuddah shad shade shadow shadowy shady