131 entries under adjective topic. ×

1
purebred
1
requisite(important, significant, original, basic)
1
rock-bottom(base, last)
1
significant(important, original, basic, vital)
1
simon-pure
1
simplest(simple, straightforward, basic, fundamental)
1
simplex(simple, straightforward, basic, fundamental)
1
simplified(simple, straightforward, basic, fundamental)
1
sinless
1
spotless
1
stainless
1
stark
1
straightforward(simple, basic, fundamental, uncomplicated)
1
structural(important, significant, original, basic)
1
substrative(important, significant, original, essential)
1
supporting(important, significant, original, basic)
1
sustaining(important, significant, original, basic)
1
theoretical(important, significant, original, basic)
1
unadorned
1
unadulterated
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APASmart Define. (2015). foundational thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/foundational/thesaurus/synonyms
ChicagoSmart Define. 2015. "foundational thesaurus" https://smartdefine.org/foundational/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, foundational thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/foundational/thesaurus/synonyms>.
MLASmart Define. "foundational thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/foundational/thesaurus/synonyms>