177 entries under base topic. ×

9
seat(noun, support, place, cause, reason)
8
footing(noun, organization, support, action, cause)
8
antecedent(noun, support, action, cause, reason)
8
bottom(noun, verb, adjective, support, quality)
8
marrow(noun, place, quality, cause, character)
8
quick(noun, place, body, cause, start)
8
radix(noun, cause, source, core)
8
tuber(noun, nature, cause, source)
7
derivation(noun, cause, start, point)
7
found(verb, form, support, fix, start)
7
fountain(noun, cause, start, point)
7
ground(noun, verb, form, support, cause)
7
groundwork(noun, support, cause, rest)
7
infrastructure(noun, organization, support, action, cause)
7
nucleus(noun, support, action, place, quality)
7
pith(noun, place, quality, body, cause)
7
provenance(noun, cause, start, point)
7
provenience(noun, cause, start, point)
7
reason(noun, support, action, cause, substance)
7
seed(noun, fix, cause, establish)
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APASmart Define. (2016). root thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/root/thesaurus/synonyms
ChicagoSmart Define. 2016. "root thesaurus" https://smartdefine.org/root/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, root thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/root/thesaurus/synonyms>.
MLASmart Define. "root thesaurus" 2 March 2016. Web. 20 September 2026. <https://smartdefine.org/root/thesaurus/synonyms>