97 entries under basic topic. ×

2
intrinsic(adjective, important, significant, original, essential)
2
original(adjective, important, head, significant, beginning)
2
primitive(adjective, important, head, significant, beginning)
1
axiological(important, significant, original, vital)
1
axiomatic(important, significant, original, vital)
1
bottom(adjective, important, significant, original, essential)
1
coal-and-ice(important, essential, critical, fundamental)
1
compelling(adjective, significant, essential, vital)
1
compulsory(adjective, significant, essential, vital)
1
decisive(adjective, important, significant, essential, critical)
1
deep(adjective, original, primary)
1
deep-seated(adjective, original, absolute, fundamental)
1
foundational(important, significant, original, vital)
1
grass-roots(important, significant, original, vital)
1
heavy(quality, tough, superior, important, essential)
1
imperative(adjective, important, significant, capital, essential)
1
life-or-death(important, essential, critical, fundamental)
1
mandatory(adjective, significant, essential, vital)
1
meat-and-potatoes(important, significant, original, essential, critical)
1
momentous(adjective, important, significant, substantial, serious)
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APASmart Define. (2015). cardinal thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/cardinal/thesaurus/synonyms
ChicagoSmart Define. 2015. "cardinal thesaurus" https://smartdefine.org/cardinal/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, cardinal thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/cardinal/thesaurus/synonyms>.
MLASmart Define. "cardinal thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/cardinal/thesaurus/synonyms>