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.
chadar chador chadri cheddar chuddar cheddary shader chider cheder chatter cheater shadier chowder chudder chattery chattier chitter shatter shedder shudder shoddier shuddery
radar chadar madre midair kneader padre cadre redear cedary loader deodara wader leader tatar chador cheddar chuddar deader gaydar lidar beader dare dear header feudary feodary fader deodar nadir padri reader cedar sudary lader chadri cheddary shader
chad chaeta chaetae chat chateau chatty cheat chid chide chuddah shad shade shadow shadowy shady