21 entries under important topic. ×

38
vital(adjective, natural, basic, significant)
37
constitutional(adjective, essential, basic, vital)
35
basic(adjective, essential, vital, significant)
30
fundamental(adjective, basic, essential, natural)
29
structural(adjective, basic, natural, vital, fundamental)
27
primary(adjective, essential, basic, vital)
27
elemental(adjective, essential, basic, vital)
27
essential(adjective, basic, vital, significant)
23
integral(adjective, basic, vital, total)
22
principal(adjective, basic, vital, significant)
21
necessary(adjective, essential, basic, vital)
20
prime(adjective, basic, vital, significant)
18
basal(adjective, basic, essential, vital)
16
constitutive(adjective, nature, characteristic, quality)
15
original(adjective, basic, vital, significant)
13
primitive(adjective, basic, vital, significant)
13
anatomical(adjective, basic, natural, living, biological)
11
intrinsic(adjective, significant, essential, basic)
10
radical(adjective, basic, essential, significant)
9
elementary(adjective, significant, essential, basic)
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APASmart Define. (2015). organic thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/organic/thesaurus/synonyms
ChicagoSmart Define. 2015. "organic thesaurus" https://smartdefine.org/organic/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, organic thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/organic/thesaurus/synonyms>.
MLASmart Define. "organic thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/organic/thesaurus/synonyms>