83 entries under expression topic. ×

2
leading cause(reason, importance, significance)
1
basic cause(reason, importance, significance)
1
basic condition(reason, importance, significance)
1
basic premise(reason, importance, significance)
1
basic prerequisite(reason, importance, significance)
1
basic term(reason, importance, significance)
1
bottom line(reason, importance, significance)
1
break point(reason, importance, significance)
1
center piece(reason, importance, significance)
1
central element(reason, importance, significance)
1
chief criterion(reason, importance, significance)
1
chief reason(reason, importance, significance)
1
controlling factor(reason, importance, significance)
1
core driver(reason, importance, significance)
1
critical factor(reason, importance, significance)
1
crucial component(reason, importance, significance)
1
crucial factor(reason, importance, significance)
1
crucial moment(reason, importance, significance)
1
crucial point(reason, importance, significance)
1
crucial thing(reason, importance, significance)
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APASmart Define. (2015). fundamental principle thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/fundamental_principle/thesaurus/synonyms
ChicagoSmart Define. 2015. "fundamental principle thesaurus" https://smartdefine.org/fundamental_principle/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, fundamental principle thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/fundamental_principle/thesaurus/synonyms>.
MLASmart Define. "fundamental principle thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/fundamental_principle/thesaurus/synonyms>