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major premise(expression, reason, importance, significance)
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major reason(expression, reason, importance, significance)
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major term(expression, reason, importance, significance)
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master factor(expression, reason, importance, significance)
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opinion maker(expression, reason, importance, significance)
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original cause(expression, reason, importance, significance)
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original reason(expression, reason, importance, significance)
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overriding reason(expression, reason, importance, significance)
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overriding term(expression, reason, importance, significance)
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pacing factor(expression, reason, importance, significance)
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pacing item(expression, reason, importance, significance)
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primal cause(expression, reason, importance, significance)
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primary cause(expression, reason, importance, significance)
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primary reason(expression, reason, importance, significance)
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prime cause(expression, reason, importance, significance)
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prime mover(expression, reason, importance, significance)
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principal cause(expression, reason, importance, significance)
1
radical turn(expression, reason, importance, significance)
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reason fundamental(expression, reason, importance, significance)
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root cause(expression, reason, importance, significance)
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APASmart Define. (2015). fundamental principle thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/fundamental_principle/thesaurus/synonyms
ChicagoSmart Define. 2015. "fundamental principle thesaurus" https://smartdefine.org/fundamental_principle/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, fundamental principle thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/fundamental_principle/thesaurus/synonyms>.
MLASmart Define. "fundamental principle thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/fundamental_principle/thesaurus/synonyms>