double cross

• Jemanden hintergehen oder verraten, indem man entgegen einer getroffenen Vereinbarung oder einem gegebenen Versprechen handelt, oft zum eigenen Vorteil.

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.

   Verrat

   • 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.