98 entries under adjective topic. ×

2
basal(simple, plain, important, significant)
2
basic(simple, plain, important, significant)
2
elemental(simple, plain, important, significant)
2
elementary(simple, plain, important, significant)
2
essential(simple, plain, important, significant)
2
foundational(simple, plain, important, significant)
2
fundamental(clear, simple, plain, important)
2
intrinsic(important, significant, original, essential)
2
original(simple, plain, important, significant)
2
primitive(simple, plain, important, significant)
2
rudimentary(simple, plain, important, significant)
2
underlying(simple, plain, important, significant)
1
primary(simple, plain, important, significant)
1
ABCs(simple, straightforward, basic, fundamental)
1
abecedarian(simple, straightforward, basic, fundamental)
1
axiological(important, significant, original, essential)
1
axiomatic(important, significant, original, basic)
1
beginning(simple, straightforward, basic, fundamental)
1
bottom(important, significant, original, essential)
1
bottom-line(important, significant, original, essential)
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APASmart Define. (2011). substratal thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/substratal/thesaurus/synonyms
ChicagoSmart Define. 2011. "substratal thesaurus" https://smartdefine.org/substratal/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2011, substratal thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/substratal/thesaurus/synonyms>.
MLASmart Define. "substratal thesaurus" 24 May 2011. Web. 22 September 2026. <https://smartdefine.org/substratal/thesaurus/synonyms>