72 entries under vital topic. ×

33
basic(adjective, characteristic, clear, light, start)
33
fundamental(adjective, characteristic, simple, plain, pure)
28
primary(adjective, simple, plain, pure, important)
24
essential(adjective, characteristic, simple, plain, pure)
20
elemental(adjective, simple, plain, pure, important)
17
rudimentary(adjective, start, simple, plain, important)
14
underlying(adjective, simple, top, important, basic)
13
basal(adjective, start, simple, plain, pure)
13
first(adjective, order, important, opening, original)
11
prime(adjective, pure, important, head, significant)
11
principal(adjective, important, significant, original, essential)
10
original(adjective, characteristic, simple, plain, important)
9
organic(adjective, important, significant, original, basic)
8
primitive(adjective, simple, plain, important, head)
6
foundational(adjective, simple, pure, important, straightforward)
6
radical(adjective, important, significant, original, essential)
5
main(adjective, top, original, essential, basic)
5
cardinal(adjective, important, head, significant, beginning)
5
chief(adjective, top, significant, original, essential)
5
integral(adjective, characteristic, important, significant, natural)
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APASmart Define. (2015). elementary thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/elementary/thesaurus/synonyms
ChicagoSmart Define. 2015. "elementary thesaurus" https://smartdefine.org/elementary/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, elementary thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/elementary/thesaurus/synonyms>.
MLASmart Define. "elementary thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/elementary/thesaurus/synonyms>