123 entries under cause topic. ×

1
fountainhead(source, origin)
1
heart(noun, start, base, beginning)
1
impulse(noun, influence, base, beginning)
1
inception(influence, beginning, source, root)
1
mainspring(connection, source, origin, derivation)
1
marrow(source, nut, origin, grain)
1
nub(noun, start, base, beginning)
1
occasion(source, origin, derivation)
1
parent(influence, connection, source, derivation)
1
pith(source, nut, origin, grain)
1
principle(noun, influence, base, beginning)
1
progenitor(influence, connection, source, derivation)
1
provenance(influence, source, root, origin)
1
provenience(noun, influence, source, root)
1
radicle(source, origin)
1
rock bottom(expression, source, origin)
1
roots(influence, connection, source, derivation)
1
soul(noun, start, base, beginning)
1
substance(source, nut, origin, grain)
1
well(influence, supply, source, root)
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APASmart Define. (2015). seed thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/seed/thesaurus/synonyms
ChicagoSmart Define. 2015. "seed thesaurus" https://smartdefine.org/seed/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, seed thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/seed/thesaurus/synonyms>.
MLASmart Define. "seed thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/seed/thesaurus/synonyms>