trump card

• Atout ou avantage décisif, souvent secret ou inattendu, qui permet de prendre l'avantage sur un adversaire au moment crucial. Le terme vient des jeux de cartes où la carte d'atout l'emporte sur les autres couleurs.

A resource, strategy, or piece of information that gives someone a decisive advantage over others, especially when used at a critical moment. Originates from card games where a trump card beats all others in a suit.

1. B2informal

   A resource or strategy that gives someone a decisive advantage over others, especially in a competitive situation.

   atout décisif

   • Her experience in crisis management was her trump card during the negotiations.
   • The company's new technology is their trump card in the market.
   • He played his trump card by revealing the secret information at the last moment.

2. Winning move in card gamesB1formal

   In card games, a card from the suit that outranks all other suits for that round.

   Atout

   • He saved his trump card for the final trick.
   • Playing a trump card can change the outcome of the game.
   • She used her trump card to win the round.