Simple Definition of treacherous
: not able to be trusted : showing that someone cannot be trusted
: very dangerous and difficult to deal with
Full Definition of treacherous
Examples of treacherous
a treacherous act of betrayal
They were not prepared to hike over such treacherous terrain.
The snow made their hike all the more treacherous.
Discussions about money can lead couples into treacherous territory.
First Known Use of treacherous
Synonym Discussion of treacherous
Rhymes with treacherous
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