deadness

definition: the inanimate property of something that has died
example:
speech part: noun
synonyms:
definition: the physical property of something that has lost its elasticity
example: They objected to the deadness of the tennis balls.
speech part: noun
synonyms:
definition: the quality of being unresponsive
example:
speech part: noun
synonyms: unresponsiveness

How deadness is being used?