Origin: Germanic Old English suffix
Unresponsiveness has 2 different meanings across 1 category:
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"
The state of being unresponsive.