behind someone's back idiom
C2 在（某人）背后；背地里，暗中
If you do something behind someone's back, you do it without them knowing, in a way that is unfair.
I dread to think what they say about me behind my back. 我不敢想他们在背后说我什么。
江苏热线英汉汉英双解词典包含207361条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。