Meaning of the word "back up" in English

What does "back up" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

back up

US /bæk ˈʌp/

UK /bæk ʌp/

to make a copy of information on your computer

Example:

•

You should always back up your important files.

•

Did you remember to back up the system before the update?

Synonym:

archive duplicate copy save

to support someone or something

Example:

•

I'll back you up if you need help.

•

The evidence doesn't back up his claims.

Synonym:

support corroborate substantiate verify confirm

to move backward, especially a vehicle

Example:

•

Can you back up a little so I can park?

•

The truck had to back up to turn around in the narrow street.

Synonym:

reverse retreat recede