Synonyms|498Antonyms|52|Broader|10Narrower|0Related|685

49 entries under nefarious topic. ×

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abstruse(adjective, evil, mysterious, threatening)
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anagogic(adjective, evil, mysterious, threatening)
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arcane(adjective, evil, mysterious, threatening)
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cabalistic(adjective, evil, mysterious, threatening)
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complicated(adjective, evil, mysterious, threatening)
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concealed(adjective, evil, mysterious, threatening)
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cryptic(adjective, evil, mysterious, threatening)
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deep(adjective, evil, mysterious, threatening)
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enigmatic(adjective, evil, mysterious, threatening)
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esoteric(adjective, evil, mysterious, threatening)
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frowning(adjective, evil, mysterious, threatening)
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glowering(adjective, evil, mysterious, threatening)
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glum(adjective, evil, mysterious, threatening)
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hidden(adjective, evil, mysterious, threatening)
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intricate(adjective, evil, mysterious, threatening)
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knotty(adjective, evil, mysterious, threatening)
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mystic(adjective, evil, mysterious, threatening)
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mystical(adjective, evil, mysterious, threatening)
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mystifying(adjective, evil, mysterious, threatening)
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nasty(adjective, evil, vile, mysterious, threatening)
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APASmart Define. (2015). infernal thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/infernal/thesaurus/synonyms
ChicagoSmart Define. 2015. "infernal thesaurus" https://smartdefine.org/infernal/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, infernal thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/infernal/thesaurus/synonyms>.
MLASmart Define. "infernal thesaurus" 17 July 2015. Web. 22 September 2026. <https://smartdefine.org/infernal/thesaurus/synonyms>