37 entries under base topic. ×

1
core(noun, cause, idea, essence)
1
creator(noun, cause, reason, element)
1
essence(noun, cause, idea, source)
1
essentiality(noun, cause, source, ground)
1
heart(noun, cause, idea, essence)
1
impulse(noun, feeling, cause, reason, object)
1
inducement(noun, cause, influence, reason, object)
1
influence(noun, feeling, cause, reason, object)
1
marrow(noun, cause, idea, essence)
1
occasion(noun, cause, start, reason, object)
1
pith(noun, cause, idea, essence)
1
producer(noun, cause, reason, element)
1
quintessence(noun, cause, source, ground)
1
soul(noun, cause, source, ground)
1
stuff(noun, cause, source, ground)
1
substance(noun, cause, idea, essence)
0
virtuality(noun, root, ground, intermediacy)
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APASmart Define. (2015). mainspring thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/mainspring/thesaurus/synonyms
ChicagoSmart Define. 2015. "mainspring thesaurus" https://smartdefine.org/mainspring/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, mainspring thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/mainspring/thesaurus/synonyms>.
MLASmart Define. "mainspring thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/mainspring/thesaurus/synonyms>