3
sustainer(noun, support, stay, advocate, prop)
2
anchorman
2
angel(noun, support, stay, advocate, champion)
2
arch(noun, support)
2
arm(noun, support, stay, bar, prop)
2
ballast(noun, support, hold, refuge)
2
bastion(noun, support, place, fortification, stronghold)
2
bear(verb, hold, maintain, stay, base)
2
bracer(noun, support, stay, bar, prop)
2
bracket(noun, support, stay, bar, prop)
2
carry(verb, hold, maintain, uphold, reinforce)
2
cornerstone(noun, element, foundation, basis, pillar)
2
cradle(verb, hold, maintain, stay, bear)
2
foundation(noun, heart, basis, center, pillar)
2
girdle
2
guts(noun, asset, forte)
2
hold(noun, verb, support, maintain, base)
2
hold up(verb, expression, hold, maintain, stay)
2
keep up(verb, expression, hold, maintain, stay)
2
main strength
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APASmart Define. (2015). mainstay thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/mainstay/thesaurus/synonyms
ChicagoSmart Define. 2015. "mainstay thesaurus" https://smartdefine.org/mainstay/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, mainstay thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/mainstay/thesaurus/synonyms>.
MLASmart Define. "mainstay thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/mainstay/thesaurus/synonyms>