1. a person who predicts or forecasts future events, especially based on signs or omens
Usage: often used with a neutral or slightly skeptical tone
2. a person who makes predictions about the outcome of sports events, elections, or other competitions
Usage: common in sports and political contexts

Examples

• The weather prognosticator predicted rain for the weekend.
• Sports prognosticators disagreed about which team would win the championship.
• Political prognosticators were uncertain about the election outcome.
• Ancient prognosticators used the stars to forecast the future.
• The financial prognosticator warned of a market downturn.
• Some prognosticators claimed to read omens in animal behavior.
• Television prognosticators made bold predictions about next season's winners.