treacherous - definition in the American English Dictionary - Cambridge Dictionaries Online (US)

Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “treacherous”

See all translations

treacherous

adjective  us   /ˈtretʃ·ər·əs/

treacherous adjective (DANGEROUS)

(of the ground or the sea) extremely dangerous, esp. because of bad weather conditions: Freezing rain made driving treacherous.

treacherous adjective (NOT LOYAL)

(of a person) guilty of deceiving someone who trusts you: He was treacherous, or at least sneaky.
(Definition of treacherous from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of treacherous?
Add Cambridge dictionaries to your browser to your website

Definitions of “treacherous” in other dictionaries

Word of the Day

decider

a final game or competition that allows one person or team to win, or the winning point scored

Word of the Day

What’s All The Commotion About? (Words to describe sounds)

by Kate Woodford,
May 20, 2015
​​​ In this post we look at a range of words and phrases that we use to describe noise and the absence of noise. Starting with complete quiet, we sometimes use the noun hush to describe silence: A hush fell over the room as the bride walked in./There was a deathly hush (=complete

Read More 

ancestral health noun

May 25, 2015
diet based on the presumed diet of our Palaeolithic ancestors ‘Ancestral health,’ to use a term popular among Paleo followers, has gone mass.

Read More