Back Up Definition

verb

(idiomatic, intransitive) To move backwards, especially for a vehicle to do so.

That beeping sound indicates that the truck is backing up.

Wiktionary

(idiomatic) To move a vehicle backwards.

Back up the car a little, you're blocking the driveway.

Wiktionary

(idiomatic, intransitive) To undo one's actions.

I couldn't see how to finish the project, so I backed up and tried it another way.

Wiktionary

(idiomatic, intransitive) To reconsider one's thoughts.

This isn't working. Let's back up and think about it.

Wiktionary

(idiomatic, computing) To copy (data) as a security measure.

Back up your documents folder before applying the update.

Wiktionary

Synonyms:

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