2
reason(noun, support, action, cause, start)
2
rock bottom(expression, cause, quick, source, origin)
2
rudiment(noun, support, action, base, beginning)
2
seating(noun, support, rest, base, balance)
2
shoring(noun, verb, support)
2
sustaining
2
upholding(verb, adjective, supporting)
1
abutment(noun, support, hold, block, back)
1
action(noun, support, base, beginning, source)
1
agency(noun, hold, block, back, base)
1
aid(noun, leg, crutch)
1
antecedent(noun, support, action, cause, reason)
1
arm(noun, support, stay, bar, prop)
1
assumption(noun, support, action, base, beginning)
1
authority(noun, support, action, substance, base)
1
axiom(noun, support, action, base, beginning)
1
back(noun, hold, block, base, foundation)
1
backbone(noun, support, action, base, beginning)
1
background(noun, support, action, base, beginning)
1
band(noun, support, stay, bar, prop)
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APASmart Define. (2015). underpinning thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/underpinning/thesaurus/synonyms
ChicagoSmart Define. 2015. "underpinning thesaurus" https://smartdefine.org/underpinning/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, underpinning thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/underpinning/thesaurus/synonyms>.
MLASmart Define. "underpinning thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/underpinning/thesaurus/synonyms>