203 entries under basic topic. ×

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concealed(adjective, original, primary, latent)
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constituting
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division(part, essential, section, component)
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forming
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fraction
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groceries(noun, condition, essence, necessity)
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hidden(adjective, original, primary, latent)
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immature(simple, elementary)
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in demand(expression, main, chief, necessary)
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larval(simple, elementary)
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lurking(adjective, original, primary, latent)
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nitty gritty(noun, expression, absolute, key)
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nubber(absolute, key)
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obligatory(adjective, significant, essential, vital)
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old(adjective, simple, rough, original)
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overruling(adjective, serious, essential, prime)
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portion(drop, part, material, element, essential)
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rooter
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straightforward(simple, uncomplicated)
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uncompleted(simple, elementary)
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APASmart Define. (2016). fundamental thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/fundamental/thesaurus/synonyms
ChicagoSmart Define. 2016. "fundamental thesaurus" https://smartdefine.org/fundamental/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, fundamental thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/fundamental/thesaurus/synonyms>.
MLASmart Define. "fundamental thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/fundamental/thesaurus/synonyms>