1. A final result or consequence that is not known, predictable, or assured in advance
The election had an uncertain outcome until the final votes were counted.
A eleição teve um resultado incerto até que os votos finais fossem contados.
2. A situation where the conclusion or end result remains unclear or undetermined
Due to the weather conditions, the match faced an uncertain outcome.
Devido às condições climáticas, a partida enfrentava um resultado incerto.