back up vs Backup

Both "back up" and "backup" are correct, but they are used in different contexts. "Back up" is a phrasal verb meaning to move backward or to support, while "backup" is a noun or adjective referring to a reserve or support. The choice between the two depends on whether you are using it as a verb or a noun/adjective.

Last updated: March 31, 2024 • 617 views

back up

This is a correct phrasal verb used to indicate moving backward or providing support.

Use "back up" when you want to express the action of moving backward or providing support. It is commonly used in both literal and figurative contexts.

Examples:

Can you back up a little bit so I can see?
I need you to back up your claims with evidence.
The traffic is backed up for miles.
She always has my back and backs me up in tough situations.
The computer system automatically backs up your files.

Show examples from the web [+]

Let me give just you an example to back up that last statement.
Imagine you could back up a single power station with a single superconducting cable.
He has evidence to back up his allegations.
Now, head back up to the warehouse.
Smoke alarm working, fan back up to speed.
My antiaircraft system is back up.
Calleigh, surveillance is back up.
My daughter always got back up.
Easily share or back up critical information.
Communications for emergency services are back up.
DMX failure with back up CUE availability.
You keep enough secrets, they start to back up on your brain.
Okay, I'm back up, Jack.
And work your way back up.
Now them Eastsiders are back up in there steady slinging.
It's just... things are starting to back up.
Kuransky's lying to back up his partner.
But if this thing gets worse, we might start back up.
Well, someday Mac will be back up on top.
Sometimes you have to back up and go around.

Alternatives:

move back
support
stand behind
reinforce
reverse

Backup

This is a correct noun or adjective used to refer to a reserve or support.

Use "backup" when referring to a reserve or support system. It is commonly used in technology, business, and everyday contexts.

Examples:

Make sure you have a backup plan in case of emergencies.
I need to create a backup of my important files.
The backup generator kicked in when the power went out.
We have a backup team in case the main players get injured.
Do you have a backup copy of the document?

Alternatives:

reserve
support system
fallback
spare
substitute

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back up vs Backup

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