perfidious (adj.)
"无信仰，卑鄙背叛"，来自1590年代的拉丁语 perfidiosus "背叛的"，源自 perfidia "不忠诚"（见 perfidy）。相关词汇： Perfidiously； perfidiousness。
The treacherous man either betrays the confidence that is reposed in him, or lures another on to harm by deceitful appearances; as, the treacherous signals of the wrecker. The perfidious man carries treachery to the basest extreme: he betrays acknowledged and accepted obligations, and even the most sacred relationships and claims: as, Benedict Arnold and Judas are types of perfidy. [Century Dictionary, 1895]
treacherous 的人会背叛别人对他的信任，或者通过欺骗性的外表引诱别人受害； 例如，劫船者的 treacherous 信号。perfidious 的人将背叛推向了最卑鄙的极端：他会背叛公认和接受的义务，甚至是最神圣的关系和要求：例如，本尼迪克特·阿诺德和犹大就是 perfidy 的代表。[世纪词典，1895年]
最早记录年份: 1590s