buttress Synonyms

buttressing plinth stele stiffener strengthen strengthener strut substantiate substructure subventionize support sustain sustainer toughen stay stanchion stake post prop props pylon reenforce reinforce reinforcement rest restrengthen rock shore shoring shote truss underbrace jockstrap backstop arc-boutant flying buttress hold up bolster up prop up shore up guy wire reinforcer retaining wall tone up make stronger athletic supporter firm up undergird underlie underpinning