66 entries under base topic. ×

1
justification(noun, support, action, beginning)
1
law(noun, support, action, beginning)
1
motive(noun, cause, start, idea)
1
postulate(noun, support, action, beginning)
1
premise(noun, support, action, beginning)
1
presumption(noun, support, action, beginning)
1
presupposition(noun, support, action, beginning)
1
principal element(noun, expression, support, action)
1
proof(noun, support, action, beginning)
1
quick(noun, body, cause, start)
1
reason(noun, support, action, cause, start)
1
rudiment(noun, support, action, beginning)
1
sanction(noun, support, action, beginning)
1
seat(noun, cause, start, beginning)
1
security(noun, support, action, beginning)
1
seed(noun, cause, start, beginning)
1
source(noun, support, action, cause, start)
1
starting point(noun, expression, cause, start)
1
stuff(noun, quality, cause, start, character)
1
substratum(noun, support, action, cause, start)
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APASmart Define. (2015). crux thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/crux/thesaurus/synonyms
ChicagoSmart Define. 2015. "crux thesaurus" https://smartdefine.org/crux/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, crux thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/crux/thesaurus/synonyms>.
MLASmart Define. "crux thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/crux/thesaurus/synonyms>