Webster's Revised Unabridged Dictionary · 1913

Insensibility

Insensibility , noun

[Compare French insensibilité.]

1.
The state or quality of being insensible; lack of sensibility; torpor; unconsciousness; as, the insensibility produced by a fall, or by opiates.
2.
Lack of tenderness or susceptibility of emotion or passion; dullness; stupidity.