Back up
/bæk ʌp/B2
UpperIntermediate
1. To move backwards.
- I had to back up the car to get out of the narrow parking spot.
- Please back up a little so I can see the board.
2. To support or help someone or something.
- I'll back you up if anyone doubts your story.
- The manager backed up her team during the crisis.
3. To make a copy of data to prevent loss.
- You should back up your files regularly to avoid losing important information.
- He backed up the entire database before the system upgrade.
4. To slow down or cause a delay, often by creating a traffic jam.
- The accident backed up traffic for miles.
- The construction work backed up the highway for hours.
Synonyms:
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