Meanings
How to pronounce "back up":
AU
GA
To move backwards, especially for a vehicle to do so.
Example: "That beeping sound indicates that the truck is backing up."
To move a vehicle backwards.
Example: "Back up the car a little, you're blocking the driveway."
To undo one's actions.
Example: "I couldn't see how to finish the project, so I backed up and tried it another way."
To reconsider one's thoughts.
Example: "This isn't working. Let's back up and think about it."
To copy (data) so that it can be restored if the main copy is lost.
Example: "Back up your documents folder before applying the update."
Example Sentences
1
I need to back up my computer files so I don't lose them.
2
The traffic was so bad that it caused a back up on the highway.
3
I always back up my important documents onto an external hard drive.
4
I suggest we bring extra batteries as a back up for the flashlight.
5
The police officer arrived to back up his partner in dealing with the unruly crowd.
