Which term describes a situation where a prediction is uncertain?

The term "uncertain" accurately describes a situation where a prediction lacks clarity or assurance about the outcome. This indicates that there are various factors or variables at play that make it difficult to foresee what will happen. In contexts like statistics, forecasting, or decision-making, being uncertain involves a lack of confidence in the accuracy or reliability of the predicted result. The essence of uncertainty lies in the unpredictability and variability of outcomes, making "uncertain" the most appropriate choice for this scenario.

Other terms like "certain" refer to situations where outcomes are clear and not in question, "predictable" conveys a sense that outcomes can be anticipated with a degree of confidence, and "ambiguous" implies that something may have multiple interpretations, which does not directly equate to the lack of certainty about a prediction.