mercurialness
/mərˈkjʊriəlnəs/
noun
- The quality of being quick to change in mood, behavior, or opinion; unpredictability.
- Artists are sometimes admired for their mercurialness, but it can be exhausting for those close to them.
- The coach's mercurialness kept the team on edge during practice.
- Her mercurialness made it hard for friends to know how she would react.
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