watch (one's) back
Meaning(s)
1. protect yourself or somebody else from threat or danger
Popularity
High
Professional
High
Social
How to Memorize
you better watch your back
Analysis
When you 'watch your back' or 'watch someone else's back' it means to protect you or someone else from unexpected danger or from other people around you. This phrase is usually used as a warning not to trust others. If you promise to 'watch someone's back', it means you intend to defend them or stand up for them if needed. This is a casual phrase used more often in social contexts. Similar meaning expressions include 'watch out', 'take somebody under your wing' or 'beware'.
Social Examples (Basic)
- I really don't trust Alan at all. I always feel that I have to watch my back around him.
Professional Examples (Basic)
- You better watch your back because Sarah is gunning for your job and she will stop at nothing to succeed.
- One of the great things about being in the military is that you know your fellow soldiers are always watching your back.