1. Willful betrayal of fidelity, confidence, or trust; perfidy. 背叛对忠诚、信任或信赖的有意背叛；
2. France, by the perfidy of her leaders, has utterly disgraced the tone of lenient council in the cabinets of princes, and disarmed it of its most potent topics. 法国，因其领导人的背信弃义，彻底让其仁慈的君主内阁议会制丧失了信誉，名声扫地。
3. Her little brain had been surging with contradictory feelings -- shame at exposure, shame at Hurstwood's perfidy, anger at Drouet's deception, the mockery he had made of her. 各种矛盾的情感在她的小脑袋瓜里汹涌起伏——为事情的暴露而羞愧，为赫斯渥的背信弃义感到耻辱，又为杜洛埃的欺瞒和他现在对她的嘲笑感到气恼。
英英解释
n.
1. betrayal of a trust
2. an act of deliberate betrayal
