Nefarious
Nefarious adjective - Not conforming to a high moral standard; morally unacceptable.
Threatening and nefarious are semantically related. In some cases you can use "Threatening" instead an adjective "Nefarious".
Threatening
Threatening adjective - Giving signs of immediate occurrence.
Nefarious and threatening are semantically related. Sometimes you can use "Nefarious" instead an adjective "Threatening".
Both words in one sentence
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Conspiracy Theory with Jesse Ventura: Every episode is about some threatening conspiracy with nefarious plans that always involve massive harm to the human population.
Source: You Can Panic Now - Sexual Extortion: One of Caligula's more nefarious hobbies is forcing himself upon other men's wives and daughters by threatening to have their husbands and fathers executed if they don't submit.
Source: Literature / I, Claudius - It's more about her trying to head off what she perceives as disaster than threatening them if the plan goes awry, but there is the implication that if they are doing it out of nefarious motives, she will deal with them.
Source: Film / Carrie
Cite this Source
Threatening and Nefarious. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/nefarious/threatening
Nefarious & Threatening. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/nefarious/threatening>.
Threatening or Nefarious. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/nefarious/threatening.
Google Ngram Viewer shows how "nefarious" and "threatening" have occurred on timeline