Noun unresponsiveness has 1 sense

• unresponsiveness(n = noun.attribute) deadness - 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; "she began to recover from her numb unresponsiveness after the accident"; "in an instant all the deadness and withdrawal were wiped away"
is a kind of quality
has particulars: frigidity, frigidness, resistance
Antonym: responsiveness
Derived forms adjective unresponsive₁, adjective unresponsive₂