48 entries under threatening topic. ×

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arcane(adjective, evil, mysterious, spooky)
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cabalistic(adjective, evil, mysterious, spooky)
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complicated(adjective, evil, mysterious, spooky)
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concealed(adjective, evil, mysterious, criminal)
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cryptic(adjective, evil, mysterious, spooky)
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deep(adjective, evil, mysterious, spooky)
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dour(adjective, evil, mysterious, spooky)
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enigmatic(adjective, evil, mysterious, spooky)
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esoteric(adjective, evil, mysterious, spooky)
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forbidding(adjective, evil, mysterious, spooky)
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frowning(adjective, evil, mysterious, spooky)
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glowering(adjective, evil, mysterious, spooky)
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glum(adjective, evil, mysterious, spooky)
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hidden(adjective, evil, mysterious, criminal)
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intricate(adjective, evil, mysterious, spooky)
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knotty(adjective, evil, mysterious, spooky)
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mysterious(adjective, evil, spooky)
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mystic(adjective, evil, mysterious, spooky)
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mystical(adjective, evil, mysterious, spooky)
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mystifying(adjective, evil, mysterious, spooky)
10 years ago|20k views|share |citing 
APASmart Define. (2015). nefarious thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/nefarious/thesaurus/synonyms
ChicagoSmart Define. 2015. "nefarious thesaurus" https://smartdefine.org/nefarious/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, nefarious thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/nefarious/thesaurus/synonyms>.
MLASmart Define. "nefarious thesaurus" 8 October 2015. Web. 22 September 2026. <https://smartdefine.org/nefarious/thesaurus/synonyms>