Would he believe that I was both imp and hound in treacherous earnest, and had betrayed him?
Not only that, but I felt convinced that Miss Havisham too would not be understood; and although she was perfectly incomprehensible to me, I entertained an impression that there would be something coarse and treacherous in my dragging her as she really was (to say nothing of Miss Estella) before the contemplation of Mrs. Joe.
There are no more uses of "treacherous" in the book.
Show samples from other sources
The road through Afghanistan’s Kabul gorge is even more treacherous than the Road of Death in Bolivia.
It’s a gorgeous beach, but the waves are treacherous in the water.