adj. 不忠实的;不正直的;(翻译等)不可靠的;不贞洁的
网络 出轨; 不忠诱罪; 不忠实的
Have you ever been unfaithful to him?
你对他是否有过不忠行为?
He vowed to wreak vengeance on his unfaithful, thieving wife.
他发誓要报复对自己不忠、爱偷东西的妻子。
She was shocked by the discovery that he had been unfaithful.
她发觉他不忠时感到非常震惊。
She wondered if Harry had been unfaithful to her during this long separation.
她想知道,在分开的漫长岁月里哈里是否已经对她不忠了。
He´s not the type to be unfaithful.
他不是背信弃义的那种人。