behind someone's back

idiom

: without someone's knowledge : in secret
You shouldn't gossip about people behind their back(s).
She went behind his back and spoke directly to his supervisor.

Dictionary Entries Near behind someone's back

Cite this Entry

“Behind someone's back.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/behind%20someone%27s%20back. Accessed 18 Jun. 2024.

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