8
pillow(noun, verb, support, help, boost)
7
bear(verb, support, hold, take, keep)
7
boost(verb, support, hold, take, help)
7
hold up(verb, expression, phrasal verb, support, hold)
7
underpin(verb, support, hold, take, continue)
6
advance(verb, support, hold, take, help)
6
aggrandize(verb, increase, open, develop, extend)
6
back up(verb, expression, phrasal verb, support, increase)
6
bolster up(verb, phrasal verb, support)
6
crutch(noun, verb, support, hold, maintain)
6
hold(verb, support, help, maintain, establish)
6
maintain(verb, support, hold, help, give)
5
buck up(verb, expression, phrasal verb, support, help)
5
buoy(verb, support, help, set, keep)
5
confirm(verb, support, increase, keep, maintain)
5
corroborate(verb, support, increase, establish, extend)
5
embellish(verb, increase, open, develop, extend)
5
facilitate(verb, support, ease, back, aid)
5
prop up(verb, expression, phrasal verb, support, help)
5
reassure(verb, support, develop, promote, encourage)
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APASmart Define. (2016). bolster thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/bolster/thesaurus/synonyms
ChicagoSmart Define. 2016. "bolster thesaurus" https://smartdefine.org/bolster/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, bolster thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/bolster/thesaurus/synonyms>.
MLASmart Define. "bolster thesaurus" 26 February 2016. Web. 25 September 2026. <https://smartdefine.org/bolster/thesaurus/synonyms>