70 entries under primary topic. ×

15
integral(adjective, characteristic, body, importance, material)
14
underlying(adjective, simple, plain, important, significant)
13
leading(adjective, feature, state, characteristic, importance)
12
radical(adjective, importance, important, significant, original)
11
weighty(adjective, importance, big, important, significant)
10
consequential(adjective, importance, big, important, significant)
10
first(adjective, important, significant, original, prominent)
9
basal(adjective, body, simple, plain, material)
9
capital(adjective, importance, important, prominent, prime)
9
outstanding(adjective, importance, important, significant, valuable)
9
significant(adjective, importance, big, important, original)
8
foremost(adjective, importance, big, important, significant)
8
paramount(adjective, importance, important, significant, original)
7
major(adjective, important, significant, original, substantial)
6
deep(adjective, original, basic, intimate, secret)
6
primitive(adjective, body, simple, plain, material)
5
original(adjective, characteristic, body, simple, plain)
3
dominant(adjective, important, outstanding, significant, prominent)
3
foundational(adjective, simple, plain, pure, important)
3
predominant(adjective, important, outstanding, significant, prominent)
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APASmart Define. (2016). essential thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/essential/thesaurus/synonyms
ChicagoSmart Define. 2016. "essential thesaurus" https://smartdefine.org/essential/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, essential thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/essential/thesaurus/synonyms>.
MLASmart Define. "essential thesaurus" 31 March 2016. Web. 22 September 2026. <https://smartdefine.org/essential/thesaurus/synonyms>