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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
not in use
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "not in use" is correct and usable in written English.
You can use this phrase to describe something that is not currently being used or is not functioning. For example: "The east wing of the office building is not in use at the moment due to renovation."
✓ Grammatically correct
News & Media
Wiki
Science
Alternative expressions(8)
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
59 human-written examples
They fold up when not in use.
News & Media
▶ Unplug phone chargers and computers when not in use.
News & Media
When not in use, it's stuffed in my coat pocket.
News & Media
But Ms. Bell said, "It's basically not in use".
News & Media
Thirty of them are not in use.
News & Media
And when it's not in use?
News & Media
Unplugging electrical products when not in use 12.
The Coin remains locked when not in use.
News & Media
When not in use, it disappears from view.
News & Media
Turning off Bluetooth, especially when not in use will help.
News & Media
3. Turn off lights when not in use.
News & Media
Expert writing Tips
Best practice
When writing about energy conservation, specifically mention unplugging devices “not in use” to emphasize reducing phantom energy consumption.
Common error
Avoid using "not in use" when you mean "out of order" or "broken". "Not in use" implies a temporary state of inactivity, while "out of order" indicates a malfunction.
Source & Trust
80%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "not in use" functions as an adjectival phrase, modifying a noun to indicate that it is currently inactive or "out of service". Ludwig's examples show it describing everything from electronics to physical spaces.
Frequent in
Wiki
35%
News & Media
30%
Science
15%
Less common in
Formal & Business
10%
Encyclopedias
5%
Reference
5%
Ludwig's WRAP-UP
The phrase "not in use" is a versatile and commonly used term to describe something that is currently inactive or "out of service". As confirmed by Ludwig AI, the phrase is grammatically correct and widely applicable. The analysis reveals that it's frequently found in diverse contexts, including Wiki articles, news reports, and scientific publications. When using "not in use", ensure it accurately reflects a temporary state of inactivity, rather than indicating a broken or "non-functional" state. For formal settings, consider unutilized as a viable alternative. Remember to unplug devices that are "not in use" to conserve energy.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
out of service
This term typically applies to equipment or systems that are temporarily or permanently unavailable.
inactive
This suggests a state of being dormant or not currently functioning.
not operational
This indicates that something is not functioning or ready for use.
out of action
This implies that something is temporarily disabled or not working.
unutilized
This suggests that something is available but not being used.
unemployed
This term indicates that something is not currently engaged or active.
idle
This implies a state of inactivity, often temporary.
dormant
This suggests a state of suspended activity or development.
non-functional
This means that something is not working correctly or at all.
disused
This suggests something has been abandoned or is no longer in regular use.
FAQs
How can I use "not in use" in a sentence?
You can use "not in use" to describe items, equipment, or spaces that are currently inactive. For example, "The printer is "out of service" and "not operational" at the moment", or "These seats are "unavailable", they are "not available" to the public".
What's a formal way to say "not in use"?
In a more formal context, you could use "unutilized" or ""out of service"" to maintain a professional tone. For example, “The equipment is currently "out of service" for maintenance".
When is it appropriate to use "not in use"?
It is appropriate to use "not in use" when referring to something that is temporarily idle or unutilized, not necessarily broken or permanently "out of action". It suggests that the item is functional but currently inactive.
What are common things described as "not in use"?
Common examples include electrical appliances that are unplugged, features in software that are disabled, or a spare room that is "unoccupied". The phrase generally applies to items that are functional but temporarily "inactive".
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
80%
Authority and reliability
4.5/5
Expert rating
Real-world application tested