1. to win against someone in a fight, war, or competition
2. to cause something to fail or be unsuccessful

1. failure to win or succeed
2. the act of winning against an opponent

Examples

• Our team defeated their rivals 3-1 in the championship game.
• The army was defeated after a long battle.
• Bad weather defeated our plans for a picnic.
• The new evidence defeated the prosecutor’s argument.
• The candidate accepted defeat gracefully.
• After several defeats, the team finally won a game.
• The defeat of the enemy forces ended the war.