perfidy
perfidy n. 不忠实(行为);背信弃义(行为)
perfidy (p[schwa]r-f[schwa]-dee).Int’l law. A combatant’s conduct that creates the impression that an adversary is entitled to, or is obliged to accord, protection under international law, when in fact the conduct is a ruse to gain an advantage. • Acts of perfidy include feigning an intent to negotiate under a flag of truce, or feigning protected