watch one's back

idiom

: be careful
I hear the boss is in a bad mood this morning, so you'd better watch your back.
She has to watch her back around them.

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Cite this Entry

“Watch one's back.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/watch%20one%27s%20back. Accessed 27 Feb. 2025.

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