52 entries under original topic. ×

1
substrative(important, significant, basic, vital)
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supporting(important, significant, basic, vital)
1
sustaining(important, significant, basic, vital)
1
theoretical(important, significant, basic, vital)
1
underived(important, significant, basic, vital)
0
concealed(adjective, basic, fundamental, hidden)
0
deep(basic, primary)
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hidden(adjective, basic, fundamental, primary)
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lurking(adjective, basic, fundamental, hidden)
0
nub(adjective, basic, fundamental, primary)
0
root(adjective, basic, fundamental, hidden)
0
veiled(adjective, basic, fundamental, hidden)
<123>
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APASmart Define. (2015). indispensable thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/indispensable/thesaurus/synonyms
ChicagoSmart Define. 2015. "indispensable thesaurus" https://smartdefine.org/indispensable/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, indispensable thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/indispensable/thesaurus/synonyms>.
MLASmart Define. "indispensable thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/indispensable/thesaurus/synonyms>