What does "back up" mean in English?
"Back up" is a phrasal verb that has multiple meanings in English. In general, it means to provide support or reinforcement to something or someone. Here are some of the most common uses of "back up" in English:
1. To create a copy of data or files
One of the most common uses of "back up" is to create a copy of important data or files. This is usually done to prevent loss of data in case of a computer malfunction or other disaster. For example, you might say:
"I need to back up my files before I install this new software."
2. To provide support or reinforcement
"Back up" can also be used to mean providing support or reinforcement to someone or something. For example:
"I'll back you up in the meeting, so don't worry."
3. To move backwards
"Back up" can also be used to mean moving backwards. For example:
"The car had to back up to make room for the truck."
4. To increase in value or price
"Back up" can be used to mean increasing in value or price. For example:
"The price of gasoline is backing up again."
5. To delay or postpone something
"Back up" can also mean delaying or postponing something. For example:
"We had to back up the launch date due to unforeseen circumstances."
6. To confirm or support something
"Back up" can also be used to mean confirming or supporting something. For example:
"The evidence backs up her story."
7. To retreat or withdraw
"Back up" can be used to mean retreating or withdrawing. For example:
"The soldiers had to back up when the enemy advanced."
Conclusion
"Back up" is a versatile phrasal verb that has many meanings in English. Whether you're talking about creating a backup of your computer files or providing support to a friend, "back up" is a useful phrase to know.