1 . 背信弃义
perfidiously 不忠实地perfidy背信弃义perfoliate 贯穿性的
2 . 背信
...记) con+fide(相信)→相信别人→吐露(同) 同根词: fidelity(忠实, 忠贞); perfidy(背信)(例) Mary always confided her fears to her teacher.
3 . 不义
1. perforateperfidy背信,不义perfunctory 敷衍,表面,不关心的
4 . 不诚实
peremptory←→open to challengeperfidyn. 不诚实,背信the quality or state of being faithless or disloya.