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
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
Example Sentences
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Recent Examples of treacherous
Birth is probably treacherous for many, many animals in ways that humans don’t yet appreciate.
—
Katherine J. Wu,
The Atlantic,
29 June 2026
The current era is no less treacherous for journalists given the attacks on media in so many countries and declining public trust in journalism.
—
William Earl,
Variety,
29 June 2026
Baltimore Ravens The Ravens’ road to the AFC North title got a bit less treacherous this offseason.
—
Mike Jones,
New York Times,
29 June 2026
After death, the garden becomes more treacherous.
—
Literary Hub,
26 June 2026
See All Example Sentences for treacherous
Katherine J. Wu,
The Atlantic,
29 June 2026
The current era is no less treacherous for journalists given the attacks on media in so many countries and declining public trust in journalism.
—
William Earl,
Variety,
29 June 2026
Baltimore Ravens The Ravens’ road to the AFC North title got a bit less treacherous this offseason.
—
Mike Jones,
New York Times,
29 June 2026
After death, the garden becomes more treacherous.
—
Literary Hub,
26 June 2026
See All Example Sentences for treacherous
Recent Examples of Synonyms for treacherous
Adjective
-
And at the very center of Hell is Satan himself, the traitorous Archangel Lucifer, depicted as a monstrous creature with wings and three heads.
-
Russell fabricates a lie with the rest of the villains, and the heroes believe it, despite a warning from one traitorous tribemate.
Adjective
-
Employees quickly abandon systems that are slow, unreliable or difficult to use.
-
But weak charging infrastructure, limited and unreliable electricity supply outside major cities, and high financing costs could constrain widespread adoption on the continent, even as investors race to build out infrastructure.
Adjective
-
The charge alleges a person knowingly defrauded another by using false or misleading information to obtain money, property, credit or a loan.
-
Opponents of Amendment 5 have flatly called the advertisement misleading or false.
Cite this Entry
“Treacherous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/treacherous. Accessed 7 Jul. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
