234 entries under adjective topic. ×

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glowering(evil, mysterious, threatening, nefarious)
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glum(evil, mysterious, threatening, nefarious)
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held back(expression, restrained)
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hellish(evil, mysterious, threatening, nefarious)
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hidden from sight(expression, idiom, secret, hidden)
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hidden from view(expression, idiom, secret, hidden)
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horrible(evil, mysterious, threatening, nefarious)
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immoral(evil, mysterious, threatening, nefarious)
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imperceptive(obscure, difficult, uncertain, unclear)
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incog(obscure, new, mysterious, hidden)
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indispensable(original, basic, fundamental, hidden)
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infamous(evil, mysterious, threatening, nefarious)
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infernal(evil, mysterious, threatening, nefarious)
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knotty(evil, deep, mysterious, hidden)
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likely
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lubricious
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lying(fake, counterfeit, affected)
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necessary(original, basic, fundamental, hidden)
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needful(original, basic, fundamental, hidden)
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nefarious(evil, mysterious, criminal, threatening)
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APASmart Define. (2015). concealed thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/concealed/thesaurus/synonyms
ChicagoSmart Define. 2015. "concealed thesaurus" https://smartdefine.org/concealed/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, concealed thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/concealed/thesaurus/synonyms>.
MLASmart Define. "concealed thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/concealed/thesaurus/synonyms>