Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
backup
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "backup" is correct and usable in written English.
It can be used when referring to a copy of data or a plan that serves as a substitute in case of failure or loss. Example: "Make sure to create a backup of your important files before the system update."
✓ Grammatically correct
News & Media
Formal & Business
Science
Alternative expressions(3)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
60 human-written examples
Not for you, of course; because, as a former IT manager, I know your backup regime is this: 1) Never back up; 2) When catastrophe hits, come to me, crying.
News & Media
The senior military officials passed on the information to their superiors shortly after receiving it, but got no order to send backup to Chibok, half an hour's drive from the nearest battalion.
News & Media
My husband has had backup cameras installed on my car.
News & Media
There are many options, but I hoped to make it as a freelance writer – all you really need is a laptop, a camera, internet access and online backup.
News & Media
To avert disappointment, there are even spare tellers waiting in the wings, and a backup generator on standby in case of power cuts.
News & Media
He had armed backup in the form of Estonian security officers nearby but they were unable to react in time because of the use of flash grenades and because their communications were jammed.
News & Media
If such an officer is unavailable, he said, other officers on the scene should know to call and wait for backup.
News & Media
But Gilmour gradually changed his mind, inviting McBroom-Hudson to record backup vocals last December and adding more singing since then.
News & Media
"My goal was just to be a backup singer – I never intended to be in front.
News & Media
In court documents, Sheehan argues that the officers' second entry unnecessarily escalated a volatile situation and that officers should have waited for backup instead of forcing their way back into her room.
News & Media
Reed invited Hegarty to join him as a backup vocalist on his Animal Serenade tour, and the pair have been friends and occasional collaborators ever since (Hegarty is hoping that Reed and his partner Laurie Anderson, of O Superman fame, will both return the compliment and appear at Meltdown).
News & Media
Expert writing Tips
Best practice
When discussing digital data, specify the type of "backup" (e.g., "cloud backup", "local backup") to clarify its location and method.
Common error
Be mindful of the distinction between "backup" (noun or adjective) and "back up" (verb). For example, use "backup files" (adjective) versus "back up your files" (verb).
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The primary grammatical function of "backup" is as a noun, referring to a reserve or substitute. It can also function as an adjective, modifying other nouns. Ludwig AI confirms the correct usage of the word.
Frequent in
News & Media
38%
Formal & Business
32%
Science
30%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
The term "backup" is a versatile and frequently used term, functioning primarily as a noun or adjective to denote a reserve or substitute. Ludwig AI validates its correct and widespread usage across multiple contexts. Its presence is most prominent in news, business, and technical domains. To ensure clarity, specify the type of "backup" you are discussing. Avoid confusing the noun/adjective "backup" with the verb phrase "back up". When writing, remember that "backup" is essential for ensuring redundancy and security, whether it's in data storage or contingency planning. The wide variety of example sentences listed in Ludwig reflects the utility of this term in all types of communication.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
reserve copy
Emphasizes having an extra copy as a safeguard.
safety net
Highlights the protective aspect of having a secondary measure.
contingency plan
Focuses on planning for unexpected events and having alternative actions.
duplicate file
Specifies that the backup is an exact copy of a digital file.
standby system
Refers to a system ready to take over if the primary system fails.
alternative resource
Highlights the substitutive nature of a backup when the primary resource is unavailable.
secondary support
Focuses on providing additional assistance if the main support fails.
fallback option
Implies a less preferred but still viable alternative.
insurance policy
Metaphorically used to describe a measure that provides security against potential loss.
redundancy measure
Highlights the duplication aspect to ensure availability.
FAQs
How can I use the word "backup" in a sentence?
You can use "backup" as a noun, such as "Do you have a "reserve copy" of the data?" or as an adjective, such as "This is my "standby system"."
What is another word for "backup"?
Depending on the context, synonyms for "backup" include "reserve copy", "safety net", or "contingency plan".
Which is correct, "backup data" or "back up data"?
"Backup data" is correct when "backup" functions as an adjective describing the data. "Back up data" is a verb phrase, meaning to create a copy of the data.
What's the difference between a "backup" and a "recovery"?
A "backup" is a copy of data or a system to be used in case of failure. "Recovery" is the process of restoring that data or system from the "reserve copy".
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested