3
buoy(verb, support, help, keep, maintain)
3
buoy up(verb, expression, phrasal verb, support, maintain)
3
consolidate(verb, support, close, set, fix)
3
foundation(noun, hold, block, back, base)
3
girdle(verb, support, secure, brace)
3
guy(noun, support, stay, bar, prop)
3
keep(verb, support, maintain, sustain, underwrite)
3
nerve(verb, close, set, fix, settle)
3
prove
3
rampart(noun, support, hold, cover, position)
3
secure(verb, support, calm, fix, protect)
3
stiffen(verb, support, calm, close, set)
3
stiffener(noun, hold, block, back, base)
2
amalgamate(verb, close, set, fix, settle)
2
anchor(noun, support, prop, pillar, backbone)
2
anneal(verb, support, close, set, fix)
2
arm(noun, support, stay, bar, prop)
2
assist(verb, support, help, keep, maintain)
2
augment(verb, support, increase, boost, sustain)
2
bake(verb, close, set, fix, settle)
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APASmart Define. (2015). buttress thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/buttress/thesaurus/synonyms
ChicagoSmart Define. 2015. "buttress thesaurus" https://smartdefine.org/buttress/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, buttress thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/buttress/thesaurus/synonyms>.
MLASmart Define. "buttress thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/buttress/thesaurus/synonyms>