Mr. Heathcliff, I believe, had not treated him physically ill; thanks to his fearless nature, which offered no temptation to that course of oppression: he had none of the timid susceptibility that would have given zest to ill-treatment, in Heathcliff s judgment.
There are no more uses of "susceptibility" in the book.
Show samples from other sources
The company tests new employees for susceptibility to workplace hazards.
I don’t drink because members of my family have an increased susceptibility to alcoholism.