17
foundation(noun, organization, support, hold, cause)
15
base(noun, organization, support, action, hold)
13
groundwork(noun, organization, support, hold, cause)
12
basis(noun, support, action, cause, start)
11
support(noun, organization, support, action, stay)
8
bottom(noun, support, cause, start, substance)
8
buttress(noun, support, hold, block, back)
8
footing(noun, organization, support, action, hold)
8
prop(noun, support, hold, block, back)
7
brace(noun, support, hold, block, back)
7
fundament(noun, support, rest, base, foundation)
6
backing(noun, verb, adjective, support, action)
6
bedrock(noun, support, action, cause, start)
6
infrastructure(noun, organization, support, action, cause)
6
substructure(noun, organization, support, hold, block)
5
bolstering(verb, support, supporting, strengthening)
5
buttressing(verb, support, supporting, strengthening)
5
column(noun, support, hold, block, back)
5
ground(noun, support, cause, start, substance)
5
propping(verb, adjective, supporting)
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APASmart Define. (2015). underpinning thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/underpinning/thesaurus/synonyms
ChicagoSmart Define. 2015. "underpinning thesaurus" https://smartdefine.org/underpinning/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, underpinning thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/underpinning/thesaurus/synonyms>.
MLASmart Define. "underpinning thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/underpinning/thesaurus/synonyms>