43 entries under important topic. ×

16
fundamental(adjective, body, simple, plain, material)
16
organic(adjective, natural, original, basic)
14
elementary(adjective, start, simple, plain, pure)
14
primary(adjective, body, simple, lead, plain)
13
essential(adjective, body, simple, plain, material)
12
basic(adjective, body, start, simple, plain)
12
elemental(adjective, body, simple, plain, material)
10
radical(adjective, base, significant, last)
8
underlying(adjective, simple, plain, base)
6
foundational(adjective, simple, base, pure)
6
rudimentary(adjective, start, simple, straightforward)
5
bottom(noun, adjective, significant, original)
5
cardinal(noun, adjective, lead, head)
5
prime(adjective, body, lead, material, pure)
4
constitutive(original, serious, basic, prime)
4
necessary(adjective, body, material, significant)
4
original(adjective, simple, natural, straightforward)
3
indispensable(adjective, significant, original, essential)
3
key(adjective, lead, head, significant)
3
primitive(adjective, body, simple, plain, material)
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APASmart Define. (2015). basal thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/basal/thesaurus/synonyms
ChicagoSmart Define. 2015. "basal thesaurus" https://smartdefine.org/basal/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, basal thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/basal/thesaurus/synonyms>.
MLASmart Define. "basal thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/basal/thesaurus/synonyms>