- 1that cannot be trusted; intending to harm you synonym deceitful He was weak, cowardly, and treacherous. lying, treacherous words
Want to learn more?
Find out which words work together and produce more natural sounding English with the Oxford Collocations Dictionary app.
- 2dangerous, especially when seeming safe The ice on the roads made driving conditions treacherous.
adverbSee treacherous in the Oxford Advanced Learner's Dictionary
Check pronunciation: treacherous