1
no alternative(expression, need, essential, requirement, prerequisite)
1
no choice(expression, need, essential, requirement, prerequisite)
1
nub
1
parameter
1
pinch(need, essential, requirement, prerequisite, essentiality)
1
pith
1
pivot
1
principle(noun, law, condition, essential, foundation)
1
privation(need, essential, requirement, prerequisite, essentiality)
1
provisions
1
qua
1
real issue
1
rock bottom(expression, law, foundation, basic, stipulation)
1
rudiment(noun, law, condition, foundation, essence)
1
salient point
1
saving clause
1
starting point(expression, theory, guesstimate, premise)
1
string
1
substance
1
substantive point
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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>