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.
grosser crosser grouser grassier grocer gorsier greaser crosier crasser grocery greasier carouser caresser curiouser crosshair grazer curser crozer cuirassier crozier courser creaser coarser grazier cruiser creasier cursor coercer corsair crazier cursory kreuzer
crosser grosser caresser carouser crasser crosier cuirassier curiouser prissier grouser prosier dorser dressier drossier tressier trusser browser harasser brassier arouser rouser rosier rosery rooser grassier reissuer presser proser xerosere dresser drosera hydrosere trouser worser
gross cross crosse grass grassy grouse grows