169 entries under foundation topic. ×

4
mainspring(noun, cause, start, reason, idea)
4
origination(noun, cause, top, opening, source)
4
presupposition(noun, action, idea, base, belief)
4
security(noun, action, base, permit, beginning)
4
seed(noun, cause, start, influence, base)
4
start(cause, source, derivation)
4
understructure(noun, substance, base, balance)
3
authority(noun, action, cause, substance, base)
3
basic(drop, part, material, element, essential)
3
derivation(noun, cause, source, root)
3
fount(noun, cause, supply, source)
3
keynote(noun, law, regulation, action, substance)
3
nexus(noun, action, base, beginning, answer)
3
nub(noun, quality, body, cause, start)
3
sanction(noun, action, base, permit, beginning)
2
action(noun, study, cause, reason, base)
2
backing(noun, action, base, beginning, source)
2
bottom line(noun, expression, law, spirit, substance)
2
burden(noun, quality, body, character, strength)
2
causation(noun, cause, reason, matter, beginning)
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APASmart Define. (2015). basis thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/basis/thesaurus/synonyms
ChicagoSmart Define. 2015. "basis thesaurus" https://smartdefine.org/basis/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, basis thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/basis/thesaurus/synonyms>.
MLASmart Define. "basis thesaurus" 22 December 2015. Web. 24 September 2026. <https://smartdefine.org/basis/thesaurus/synonyms>