48 entries under nefarious topic. ×

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Delphian(adjective, evil, obscure, deep, mysterious)
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anagogic(adjective, evil, deep, mysterious, hidden)
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bad(adjective, evil, mysterious, threatening)
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corrupt(adjective, evil, mysterious, threatening)
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damnable(adjective, evil, mysterious, threatening)
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dour(adjective, evil, mysterious, threatening)
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evil(adjective, mysterious, threatening, spooky)
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forbidding(adjective, evil, mysterious, threatening)
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foul(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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hellish(adjective, evil, mysterious, threatening)
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horrible(adjective, evil, mysterious, threatening)
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immoral(adjective, evil, mysterious, threatening)
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infamous(adjective, evil, mysterious, threatening)
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infernal(adjective, evil, mysterious, threatening)
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nasty(adjective, evil, mysterious, threatening)
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not known(expression, adjective, evil, deep, mysterious)
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satanic(adjective, evil, mysterious, threatening)
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APASmart Define. (2016). enigmatic thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/enigmatic/thesaurus/synonyms
ChicagoSmart Define. 2016. "enigmatic thesaurus" https://smartdefine.org/enigmatic/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, enigmatic thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/enigmatic/thesaurus/synonyms>.
MLASmart Define. "enigmatic thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/enigmatic/thesaurus/synonyms>