1. playing a trump card that is higher than one already played in the same trick
Usage: card games; present participle of overtrump
2. surpassing or defeating someone or something by using a stronger or more powerful resource or argument
Usage: figurative

1. the act or instance of playing a trump card higher than one already played, or of surpassing someone with a superior resource
Usage: gerund form

Examples

• In bridge, overtrumping with the ace was a risky but necessary move.
• She won the argument by overtrumping his objections with documented evidence.
• The competitor's overtrumping strategy in the final round secured the victory.
• He kept overtrumping every proposal with a better alternative.
• The overtrumping of the king with the ace changed the outcome of the hand.
• By overtrumping their initial offer, the negotiators gained significant leverage.