changeability
US /ˌtʃeɪndʒəˈbɪləti/
UK /ˌtʃeɪndʒəˈbɪləti/

1.
the quality of being subject to change or alteration
:
•
The changeability of the weather made planning difficult.
•
Her mood's changeability was hard to predict.
the quality of being subject to change or alteration