double cross

• Предать кого-либо, действуя вопреки предыдущему соглашению или обещанию, часто ради личной выгоды.

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.

   Предательство

   • 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.