1. A competition or game whose outcome determines a final result, winner, or advancement to the next stage
The final game was a decisive match that determined the championship winner.
O jogo final foi uma partida decisiva que determinou o vencedor do campeonato.
2. A match in which one side establishes clear dominance or achieves a conclusive victory
It was a decisive match with a 5-0 victory.
Foi uma partida decisiva com uma vitória de 5-0.