Back Somebody Up
- Back Somebody Up
- to support or help someone, often in a difficult situation
- I'll back you up if you decide to quit your job.
- She backed up her colleague in the meeting when he was being criticized.
- to make a copy of computer data in case the original is lost or damaged
- Remember to back up your files before you format your computer.
- The company backs up its data every night to prevent loss in case of a disaster.
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