1. The inanimate property of something that has died
   "The deadness of the forest after the wildfire was haunting"
    
2. The quality of being unresponsive; not reacting; as a quality of people, it is marked by a failure to respond quickly or with emotion to people or events
   "in an instant all the deadness and withdrawal were wiped away";
   - unresponsiveness
    
3. The physical property of something that has lost its elasticity
   "he objected to the deadness of the tennis balls"

Type of: inanimateness, inelasticity, lifelessness, quality

Antonym: responsiveness

Encyclopedia: Deadness