perfidious

汉语翻译

a. 不忠贞的, 背信的, 有异心的

词型变化：

副词:perfidiously 

英语解释：

形容词 perfidious:

1. tending to betray; especially having a treacherous character as attributed to the Carthaginians by the Romans
   同义词：punic, treacherous

详细解释：

per.fid.i.ous

adj.（形容词）
Of, relating to, or marked by perfidy; treacherous.See Synonyms at faithless
背信弃义的：属于、关于或被认为背信弃义的；背信弃义的参见 faithless

【引伸】
perfid.iously
adv.（副词）