2
serve(verb, support, help, advance, develop)
2
side(verb, support, take, promote, encourage)
2
solace(verb, support, develop, promote, encourage)
2
soup up(verb, expression, support, increase, open)
2
speak for(verb, expression, support, take, help)
2
spread around(expression, support, take, promote, encourage)
2
stanchion(noun, support, stay, bar, shaft)
2
stand by(verb, expression, support, keep, maintain)
2
stand up for(verb, expression, idiom, phrasal verb, support)
2
stick up for(verb, expression, idiom, support, hold)
2
stump for(verb, expression, support, take, maintain)
2
subsidize(verb, support, help, advance, keep)
2
succor(verb, support, help, advance, develop)
2
thicken(verb, increase, open, develop, extend)
2
toughen(verb, support, increase, establish, extend)
2
tout(verb, support, take, promote, encourage)
2
underlie
2
unravel(verb, increase, open, develop, extend)
2
urge(verb, support, take, help, advance)
2
validate(verb, support, help, keep, maintain)
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APASmart Define. (2016). bolster thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/bolster/thesaurus/synonyms
ChicagoSmart Define. 2016. "bolster thesaurus" https://smartdefine.org/bolster/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, bolster thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/bolster/thesaurus/synonyms>.
MLASmart Define. "bolster thesaurus" 26 February 2016. Web. 26 September 2026. <https://smartdefine.org/bolster/thesaurus/synonyms>