139 entries under mysterious topic. ×

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infamous(adjective, evil, threatening, nefarious)
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infernal(adjective, evil, threatening, nefarious)
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nasty(adjective, evil, threatening, nefarious)
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nefarious(adjective, evil, criminal, threatening)
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phenomenal(obscure, dark, superior, supernatural)
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satanic(adjective, evil, threatening, nefarious)
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scowling(adjective, evil, threatening, nefarious)
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secret supernatural(expression, obscure, deep)
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sinful(adjective, evil, threatening, nefarious)
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sulky(adjective, evil, threatening, nefarious)
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sullen(adjective, evil, threatening, nefarious)
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superhuman(obscure, dark, superior, supernatural)
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superior(obscure, dark, supernatural, heavenly)
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threatening(adjective, evil, nefarious, spooky)
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transmundane(obscure, deep)
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unearthly(obscure, dark, deep, supernatural)
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upset(adjective, evil, threatening, nefarious)
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vile(adjective, evil, threatening, nefarious)
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wicked(adjective, evil, threatening, nefarious)
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APASmart Define. (2015). hidden thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/hidden/thesaurus/synonyms
ChicagoSmart Define. 2015. "hidden thesaurus" https://smartdefine.org/hidden/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, hidden thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/hidden/thesaurus/synonyms>.
MLASmart Define. "hidden thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/hidden/thesaurus/synonyms>