Buttressing rhymes with:
embarrassing, canvassing, embarrassing, encompassing, focusing, grimacing, harnessing, menacing, necklacing, practicing, promising, purchasing, refocusing, repurchasing, resurfacing, surfacing, witnessing
embarrassing, canvassing, embarrassing, encompassing, focusing, grimacing, harnessing, menacing, necklacing, practicing, promising, purchasing, refocusing, repurchasing, resurfacing, surfacing, witnessing