19
foundation(noun, organization, support, hold, study)
16
base(noun, organization, support, hold, study)
15
basis(noun, organization, support, study, area)
11
groundwork(noun, organization, support, hold, study)
10
fundament(noun, support, rest, base, basis)
9
foot(noun, support, substance, authority, rest)
8
basement(noun, support, rest, base, balance)
8
bed(noun, organization, support, hold, area)
8
bottom(noun, support, low, substance, rest)
7
infrastructure(noun, organization, support, substance, authority)
7
substratum(noun, support, hold, block, back)
7
support(noun, organization, substance, authority, rest)
7
understructure(noun, support, substance, authority, base)
6
footing(noun, organization, support, hold, block)
6
ground(noun, support, substance, authority, rest)
6
grounds(substance, foundation, basis)
6
pedestal(noun, support, rest, base, foundation)
6
underpinning(noun, organization, support, hold, block)
5
bedrock(noun, support, substance, authority, rest)
5
floor(noun, base)
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APASmart Define. (2015). substructure thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/substructure/thesaurus/synonyms
ChicagoSmart Define. 2015. "substructure thesaurus" https://smartdefine.org/substructure/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, substructure thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/substructure/thesaurus/synonyms>.
MLASmart Define. "substructure thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/substructure/thesaurus/synonyms>