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
not mine
Grammar usage guide and real-world examplesUSAGE SUMMARY
"not mine" is both a correct phrase and usable in written English.
For example, "This pen is not mine; it belongs to my neighbor."
✓ Grammatically correct
News & Media
Alternative expressions(20)
not my responsibility
It wasn't me
not my forte
beyond my range
not my duty
not my style
not my strength
not within my scope of practice
not my issue
beyond my fingertips
not my thing
outside my jurisdiction
beyond my scope
exceeds my authority
outside my capabilities
not my problem
outside my expertise
not my decision
not my specialty
beyond my boundaries
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 mine.
News & Media
"Not mine," he stressed.
News & Media
But not mine.
News & Media
"Your fault, not mine".
News & Media
(It's not mine).
News & Media
Not mine, anyway.
News & Media
"They're not mine," he said.
News & Media
It's not mine, it's yours".
News & Media
His life was not mine.
News & Media
Their words, not mine.
News & Media
His decision, not mine.
News & Media
Expert writing Tips
Best practice
Use "not mine" to clearly disassociate yourself from something, whether it's an object, an idea, or a responsibility.
Common error
Avoid using "not mine" when you simply dislike something; it should only be used to deny actual ownership or responsibility. For example, saying "That opinion is not mine" is incorrect if you simply disagree with it, rather than it being falsely attributed to you.
Source & Trust
93%
Authority and reliability
4.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "not mine" functions primarily as a determiner phrase, specifically a possessive pronoun used to negate ownership or responsibility. Ludwig shows that it frequently appears after a noun or pronoun to clarify that something does not belong to the speaker.
Frequent in
News & Media
98%
Science
1%
Formal & Business
1%
Less common in
Academia
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, "not mine" is a common and grammatically sound phrase used to disclaim ownership or responsibility. Ludwig AI confirms that it is perfectly acceptable in written English. Predominantly found in news and media contexts, the phrase serves to clearly disassociate oneself from something. While simple, the phrase is versatile, with alternatives like "doesn't belong to me" or "not my responsibility" offering nuanced ways to express the same sentiment. When employing this phrase, clarity is key to avoid misinterpretations. Therefore, ensure that the context makes it obvious to the audience what you are disclaiming ownership for.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
doesn't belong to me
Emphasizes the absence of ownership in a more direct manner.
I don't own it
A simple and direct way to state a lack of ownership.
it's not my property
Highlights the lack of legal ownership of something.
that's somebody else's
Indicates that someone else is the owner or responsible party.
not my responsibility
Shifts the focus to a lack of obligation or duty regarding something.
I disclaim ownership
A formal way to reject ownership or responsibility.
I'm not responsible
Focuses on disclaiming any liability or accountability.
that's not on me
An informal way of saying something is not your responsibility.
it wasn't me
Denies involvement or responsibility for an action or situation.
it's not my fault
Places blame elsewhere, indicating no personal responsibility.
FAQs
How can I use "not mine" in a sentence?
What's a more formal way to say "not mine"?
While "not mine" is generally acceptable, more formal alternatives include "does not belong to me", "is not my property", or "I disclaim ownership".
Is it correct to say "not mine responsibility"?
No, the correct phrasing is "not my responsibility". The possessive pronoun 'my' is required.
When should I use "not mine" versus "it wasn't me"?
"Not mine" is best used to disclaim ownership or association with something tangible or intangible. "It wasn't me" is typically used to deny involvement in an action or event.
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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
93%
Authority and reliability
4.8/5
Expert rating
Real-world application tested