A prediction is an educated guess about the future, and there are various synonyms to describe this process. One such synonym is "forecast," which refers to a detailed prediction made by an expert in a specific field. Another term is "prognosis," which typically implies a medical or scientific prediction about an individual's health or condition. "Projection" is a synonym that refers to a hypothetical prediction based on current trends or data. "Prophecy" is another word that suggests a prediction of future events, often associated with religious or supernatural beliefs. "Estimation" and "anticipation" are additional synonyms that denote the act of forecasting or expecting something to happen.