Definition of watch one's back
- 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.
: to keep vigil as a devotional exercise
: to be awake during the night
: to be attentive or vigilant
: the act of keeping awake to guard, protect, or attend
: the state of being wakeful
: a wake over a dead body
: the rear part of the human body especially from the neck to the end of the spine
: the body considered as the wearer of clothes
: capacity for labor, effort, or endurance
: to, toward, or at the rear
: in or into the past : backward in time
: to or at an angle off the vertical
: being at or in the back
: distant from a central or main area
: articulated at or toward the back of the oral passage : formed deep within the mouth
: to support by material or moral assistance
: to assume financial responsibility for
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