48 entries under essence topic. ×

12
requirement(noun, condition, need, essential, certainty)
11
necessity(noun, condition, need, essential)
11
prerequisite(noun, condition, need, essential, certainty)
11
requisite(noun, condition, need, essential, certainty)
9
must(noun, condition, need, essential, certainty)
8
condition(noun, essential, basic, theory)
8
fundamental(noun, part, need, essential, certainty)
8
precondition(noun, condition, need, essential, certainty)
3
core(noun, heart, essential, basic)
2
basic(noun, law, condition, heart, essential)
2
crux(noun, heart, essential, basic)
2
main point(noun, expression, core, outcome)
2
main thing(noun, expression, core, outcome)
2
point(noun, heart, essential, basic)
1
ABCs(noun, law, condition, foundation)
1
basis(noun, law, heart, essential, foundation)
1
bottom line(noun, expression, law, condition, essential)
1
brass tacks(noun, expression, law, condition, foundation)
1
guts(noun, law, condition, foundation)
1
nitty-gritty(noun, law, condition, heart, essential)
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APASmart Define. (2015). sine qua non thesaurus. Retrieved October 1, 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 October 1, 2026).
HarvardSmart Define 2015, sine qua non thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/sine_qua_non/thesaurus/synonyms>.
MLASmart Define. "sine qua non thesaurus" 10 April 2015. Web. 1 October 2026. <https://smartdefine.org/sine_qua_non/thesaurus/synonyms>