Synonyms|60Antonyms|3|Broader|0Narrower|0Related|13
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frowning(adjective, evil, mysterious, threatening, nefarious)
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glowering(adjective, evil, mysterious, threatening, nefarious)
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glum(adjective, evil, mysterious, threatening, nefarious)
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hellish(adjective, evil, mysterious, threatening, nefarious)
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hidden(adjective, evil, deep, mysterious, secret)
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horrible(adjective, evil, mysterious, threatening, nefarious)
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immoral(adjective, evil, mysterious, threatening, nefarious)
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infamous(adjective, evil, mysterious, threatening, nefarious)
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infernal(adjective, evil, mysterious, threatening, nefarious)
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intricate(adjective, evil, deep, mysterious, hidden)
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knotty(adjective, evil, deep, mysterious, hidden)
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mysterious(adjective, evil, deep, unknown, hidden)
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mystic(adjective, evil, deep, mysterious, hidden)
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mystical(adjective, evil, deep, mysterious, hidden)
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mystifying(adjective, evil, deep, mysterious, hidden)
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nameless
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nasty(adjective, evil, mysterious, threatening, nefarious)
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nefarious(adjective, evil, mysterious, threatening, spooky)
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obscure
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occult(adjective, evil, deep, mysterious, hidden)
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APASmart Define. (2015). not known thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/not_known/thesaurus/synonyms
ChicagoSmart Define. 2015. "not known thesaurus" https://smartdefine.org/not_known/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, not known thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/not_known/thesaurus/synonyms>.
MLASmart Define. "not known thesaurus" 24 February 2015. Web. 25 September 2026. <https://smartdefine.org/not_known/thesaurus/synonyms>