Noah Webster
Insensibility
INSENSIBIL'ITY, noun [from insensible.]
1. Want of sensibility, or the power of feeling or perceiving. A frozen limb is in a state of insensibility as is an animal body after death.
2. Want of the power to be moved or affected; want of tenderness or susceptibility of emotion and passion. Not to be moved at the distresses of others denotes an insensibility extremely unnatural.
3. Dullness; stupidity; torpor.