Meaning & use
treacherous
Guilty of betrayal or likely to betray trust; also, dangerous due to hidden or unpredictable hazards.
See it in a sentence
The icy mountain road was treacherous, forcing drivers to slow to a crawl.
His treacherous business partner secretly sold company secrets to a rival firm.
A note on using this word
Treacherous applies both to people who betray trust and to physical conditions, like weather or terrain, that hide serious danger.
Words with a similar meaning
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