1.
If you describe someone as ~, you disapprove of them because they keep changing their mind about what they like or want.
The group has been notoriously ~ in the past.
ADJ disapproval
~ness
...the ~ness of businessmen and politicians.
N-UNCOUNT: usu N of n
2.
If you say that something is ~, you mean that it often changes and is unreliable.
Orta’s weather can be ~.
ADJ