as in traitorous
not true in one's allegiance to someone or something
a treacherous "friend," she's been known to turn against people in the blink of an eye
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Recent Examples of treacherous
Ice and snow made road travel treacherous in large swaths of Michigan, which remained under a winter weather advisory until Monday afternoon.
—
CBS News, 17 Feb. 2025
The packs of mules trekked through treacherous roadways and rocky mountain sides to deliver food, water and building supplies to those devastated by the hurricane.
—Devyn Byers, CNN, 16 Feb. 2025
By Stephanie Zacharek February 14, 2025 9:12 AM EST
To watch Bridget Jones’s Diary today is to climb into a time machine whisking us back to more treacherous times, circa 2001.
—Stephanie Zacharek, TIME, 14 Feb. 2025
School districts opted to cancel class or switch to virtual learning throughout the eastern U.S. and as far west as Oklahoma, citing dangerously low temperatures and treacherous travel conditions.
—Gabe Hauari, USA TODAY, 20 Feb. 2025
See All Example Sentences for treacherous
CBS News, 17 Feb. 2025
The packs of mules trekked through treacherous roadways and rocky mountain sides to deliver food, water and building supplies to those devastated by the hurricane.
—Devyn Byers, CNN, 16 Feb. 2025
By Stephanie Zacharek February 14, 2025 9:12 AM EST
To watch Bridget Jones’s Diary today is to climb into a time machine whisking us back to more treacherous times, circa 2001.
—Stephanie Zacharek, TIME, 14 Feb. 2025
School districts opted to cancel class or switch to virtual learning throughout the eastern U.S. and as far west as Oklahoma, citing dangerously low temperatures and treacherous travel conditions.
—Gabe Hauari, USA TODAY, 20 Feb. 2025
See All Example Sentences for treacherous
Recent Examples of Synonyms for treacherous
Adjective
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But what will their first move as a traitorous duo be?—
Tom Smyth,
Vulture,
27 Feb. 2025
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The blame for this terrifying scenario, McCarthy declared, rested with traitorous federal employees, who had sold their country out and had to be purged from its service.—
Made by History,
TIME,
9 Feb. 2025
Adjective
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After the first round of tariffs earlier this month, China’s retaliatory measures included raising duties on certain U.S. energy imports and putting two U.S. companies on an unreliable entities list that could restrict their ability to do business in the Asian country.—
Anniek Bao,Evelyn Cheng,
CNBC,
28 Feb. 2025
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The challenge is that the hands-on nature of these tasks can lead to unreported problems and unreliable data, exacerbating costly inefficiencies.—
Jairam Ranganathan,
Forbes,
28 Feb. 2025
Adjective
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To illustrate, in the United Kingdom vaccinations took a considerable dip in the early 2000s after Wakefield’ false claims of a link between the MMR shot and autism were posted in the media.—
Joshua P. Cohen,
Forbes,
8 Mar. 2025
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In those documents, West discussed not only how to conduct experiments to implant false memories, instill specific mental disorders, and induce trance states, but also how to hide them.—
Randall Colburn,
EW.com,
8 Mar. 2025
Cite this Entry
“Treacherous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/treacherous. Accessed 12 Mar. 2025.
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