watch one's back

phrase

: 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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“Watch one's back.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/watch%20one%27s%20back. Accessed 13 Mar. 2026.

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watch one's back

phrase

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