145 entries under adjective topic. ×

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evil(mysterious, threatening, nefarious, spooky)
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flabbergasting
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forbidding(evil, mysterious, threatening, nefarious)
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foul(evil, mysterious, threatening, nefarious)
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frowning(evil, mysterious, threatening, nefarious)
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glowering(evil, mysterious, threatening, nefarious)
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glum(evil, mysterious, threatening, nefarious)
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hellish(evil, mysterious, threatening, nefarious)
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higgledy-piggledy
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horrible(evil, mysterious, threatening, nefarious)
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immoral(evil, mysterious, threatening, nefarious)
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inconsistent
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infamous(evil, mysterious, threatening, nefarious)
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infernal(evil, mysterious, threatening, nefarious)
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jumbled
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messy
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muddle-headed
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muddled
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nasty(evil, mysterious, threatening, nefarious)
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nefarious(evil, mysterious, threatening, spooky)
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APASmart Define. (2015). mystifying thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/mystifying/thesaurus/synonyms
ChicagoSmart Define. 2015. "mystifying thesaurus" https://smartdefine.org/mystifying/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, mystifying thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/mystifying/thesaurus/synonyms>.
MLASmart Define. "mystifying thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/mystifying/thesaurus/synonyms>