perfidious
01
背信弃义的, 不忠的
relating to someone or something that is untrustworthy and disloyal
例子
The perfidious diplomat pretended friendship while secretly plotting against the alliance.
背信弃义的外交官假装友好，同时秘密策划反对联盟。
Despite making promises of loyalty, the perfidious advisor betrayed the trust of the royal council.
尽管做出了忠诚的承诺，背信弃义的顾问还是背叛了皇家委员会的信任。
词汇树
perfidiously
perfidiousness
perfidious
perfidy
