Synonyms|498Antonyms|52|Broader|10Narrower|0Related|685

49 entries under threatening topic. ×

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not known(expression, adjective, evil, mysterious)
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occult(adjective, evil, mysterious, nefarious)
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puzzling(adjective, evil, mysterious, nefarious)
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recondite(adjective, evil, mysterious, nefarious)
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scowling(adjective, evil, mysterious, nefarious)
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secret(adjective, evil, mysterious, nefarious)
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sulky(adjective, evil, mysterious, nefarious)
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sullen(adjective, evil, mysterious, nefarious)
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upset(adjective, evil, mysterious, nefarious)
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APASmart Define. (2015). infernal thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/infernal/thesaurus/synonyms
ChicagoSmart Define. 2015. "infernal thesaurus" https://smartdefine.org/infernal/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, infernal thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/infernal/thesaurus/synonyms>.
MLASmart Define. "infernal thesaurus" 17 July 2015. Web. 25 September 2026. <https://smartdefine.org/infernal/thesaurus/synonyms>