watch one's back

Meaning: To stay alert to hidden threats.

Language: English

Literally: (Already vivid in English)

Example: “In that office, you have to watch your back.”

Category: Body & Senses

Origin: The back is the side one cannot see, and so the side an attacker chooses. The phrase is common from the 20th century.

Equivalents in other languages

More idioms — Body & Senses

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