143 entries under source topic. ×

5
consideration(noun, reason, idea, matter)
5
core(noun, support, action, quality, character)
5
grounds(noun, concept, action, philosophy, reason)
5
inspiration(noun, feeling, cause, energy, spirit)
5
mainspring(noun, cause, reason, idea, base)
5
theory(noun, concept, support, action, philosophy)
4
occasion(noun, cause, influence, reason, base)
4
purpose(noun, plan, reason, system, object)
4
underpinning(noun, support, action, base, beginning)
3
antecedent(noun, support, action, cause, reason)
3
footing(noun, support, action, base, beginning)
3
motive(noun, action, cause, reason, idea)
3
nucleus(noun, support, action, quality, cause)
3
rudiment(noun, law, support, action, drop)
3
substratum(noun, support, action, base, beginning)
2
agent(noun, cause, reason, base, matter)
2
author(noun, cause, reason, base, matter)
2
bedrock(noun, support, action, base, beginning)
2
beginning(noun, cause, reason, base, matter)
2
causation(noun, cause, reason, base, matter)
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APASmart Define. (2015). principle thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/principle/thesaurus/synonyms
ChicagoSmart Define. 2015. "principle thesaurus" https://smartdefine.org/principle/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, principle thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/principle/thesaurus/synonyms>.
MLASmart Define. "principle thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/principle/thesaurus/synonyms>