67 entries under prime topic. ×

50
fundamental(noun, adjective, characteristic, drop, part)
49
essential(noun, adjective, characteristic, drop, part)
36
primary(adjective, body, simple, plain, base)
33
elementary(adjective, characteristic, clear, light, start)
21
principal(adjective, body, material, important, significant)
19
first(adjective, order, important, significant, opening)
17
main(adjective, top, important, significant, essential)
15
original(adjective, characteristic, body, simple, plain)
14
key(adjective, property, important, head, significant)
13
cardinal(noun, adjective, property, important, head)
13
rudimentary(adjective, hard, start, simple, plain)
12
chief(adjective, important, significant, essential)
11
introductory(adjective, start, simple, plain, head)
11
primitive(adjective, body, simple, plain, material)
10
initial(adjective, start, simple, plain, head)
7
important(adjective, significant, original, essential, critical)
6
capital(adjective, essential, fundamental, key)
6
constitutional(adjective, top, natural, essential)
6
primordial(adjective, important, head, significant, beginning)
5
aboriginal(adjective, pure, head, beginning, original)
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APASmart Define. (2015). basic thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/basic/thesaurus/synonyms
ChicagoSmart Define. 2015. "basic thesaurus" https://smartdefine.org/basic/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, basic thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/basic/thesaurus/synonyms>.
MLASmart Define. "basic thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/basic/thesaurus/synonyms>