22 entries under primary topic. ×

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basal(adjective, original, basic, fundamental)
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basic(adjective, original, fundamental, latent)
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bottom(adjective, original, basic, fundamental, hidden)
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bottom-line(adjective, original, basic, fundamental, hidden)
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cardinal(adjective, original, basic, fundamental)
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critical(adjective, original, basic, fundamental, hidden)
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crucial(adjective, original, basic, fundamental, hidden)
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elemental(adjective, original, basic, fundamental)
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elementary(adjective, original, basic, fundamental)
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essential(adjective, original, basic, fundamental, hidden)
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fundamental(adjective, original, basic, latent)
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indispensable(adjective, original, basic, fundamental, hidden)
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necessary(adjective, original, basic, fundamental, hidden)
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needful(adjective, original, basic, fundamental, hidden)
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nitty-gritty(adjective, original, basic, fundamental)
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nub(adjective, original, basic, fundamental)
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prime(adjective, original, basic, fundamental)
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primitive(adjective, original, basic, fundamental)
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radical(adjective, original, basic, fundamental, hidden)
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root(adjective, original, basic, fundamental, hidden)
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APASmart Define. (2016). veiled thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/veiled/thesaurus/synonyms
ChicagoSmart Define. 2016. "veiled thesaurus" https://smartdefine.org/veiled/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, veiled thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/veiled/thesaurus/synonyms>.
MLASmart Define. "veiled thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/veiled/thesaurus/synonyms>