Unpredictability refers to something that is difficult or impossible to predict, due to its inherent variability or uncertainty. It suggests a lack of certainty and an inability to anticipate future events with any degree of accuracy. Unpredictable things can change suddenly, without warning, making it challenging for people to plan ahead or make informed decisions based on what they know. In essence, unpredictability is the quality of being difficult to predict or forecast, and it often creates a sense of uncertainty in individuals who encounter it.