double cross

• Trahir quelqu'un en agissant contre un accord ou une promesse antérieure, souvent pour un gain personnel.

To betray someone by acting against a prior agreement or promise, often for personal gain.

1. BetrayalB2informal

   To deceive or betray someone who trusts you, especially by breaking a promise or agreement.

   double jeu

   • He double-crossed his partner by taking all the money.
   • The spy was caught trying to double-cross his agency.
   • She felt hurt when her friend double-crossed her trust.