fickleness
inconstancy / capriciousness / volatility / unpredictability
Noun
This term describes a volatile lack of constancy, often carrying a negative moral judgment when applied to human character. It suggests a superficiality of conviction where commitments are discarded on a whim, creating a sense of unreliability and instability in personal relationships. When applied to non-human entities like weather or fate, the word shifts from a moral critique to a description of erratic behavior. In these contexts, it emphasizes the danger or frustration caused by sudden, unpredictable shifts in condition.