deadness (Noun) — 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. ex. "in an instant all the deadness and withdrawal were wiped away"
deadness (Noun) — The physical property of something that has lost its elasticity. ex. "he objected to the deadness of the tennis balls"
deadness (Noun) — The inanimate property of something that has died.