66 entries under basic topic. ×

1
axiomatic(important, original, vital, primary)
1
bottom-line(adjective, important, significant, original, essential)
1
concealed(adjective, unusual, original, fundamental)
1
critical(adjective, great, important, original, serious)
1
first(adjective, important, significant, original, sophisticated)
1
grass-roots(adjective, important, significant, original, essential)
1
indispensable(adjective, important, significant, original, essential)
1
meat-and-potatoes(adjective, base, important, significant, last)
1
necessary(adjective, important, significant, original, essential)
1
requisite(adjective, important, significant, original, essential)
1
structural(important, original, vital, primary)
1
substratal(adjective, important, significant, original, essential)
1
substrative(adjective, important, significant, original, essential)
1
supporting(adjective, important, significant, original, essential)
1
sustaining(adjective, important, significant, original, essential)
1
theoretical(adjective, important, significant, original, essential)
1
underived(adjective, important, significant, original, essential)
0
bottom line(expression, important, significant, essential)
0
hidden(adjective, unusual, original, fundamental)
0
latent(adjective, original, fundamental, hidden)
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APASmart Define. (2016). radical thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/radical/thesaurus/synonyms
ChicagoSmart Define. 2016. "radical thesaurus" https://smartdefine.org/radical/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, radical thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/radical/thesaurus/synonyms>.
MLASmart Define. "radical thesaurus" 29 March 2016. Web. 21 September 2026. <https://smartdefine.org/radical/thesaurus/synonyms>