1
compulsion(need, essential, requirement, prerequisite, essentiality)
1
covenant
1
crisis
1
critical point
1
donnee
1
duress(need, essential, requirement, prerequisite, essentiality)
1
element(noun, law, condition, essential, foundation)
1
escalator clause
1
escape clause
1
escape hatch
1
essential matter
1
essentiality(need, essential, requirement, necessity, quintessence)
1
exaction(need, essential, requirement, prerequisite, essentiality)
1
exigency(need, essential, requirement, prerequisite, essentiality)
1
gist
1
given
1
godsend(need, essential, requirement, prerequisite, essentiality)
1
gravamen
1
great point
1
grounds
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APASmart Define. (2015). sine qua non thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/sine_qua_non/thesaurus/synonyms
ChicagoSmart Define. 2015. "sine qua non thesaurus" https://smartdefine.org/sine_qua_non/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, sine qua non thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/sine_qua_non/thesaurus/synonyms>.
MLASmart Define. "sine qua non thesaurus" 10 April 2015. Web. 30 September 2026. <https://smartdefine.org/sine_qua_non/thesaurus/synonyms>