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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
true or untrue
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "true or untrue" is correct and usable in written English.
It can be used when discussing the validity or accuracy of a statement or claim. Example: "The statement that the Earth is flat is either true or untrue, depending on scientific evidence."
✓ Grammatically correct
News & Media
Science
Academia
Alternative expressions(1)
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
30 human-written examples
Admissions produced by these tactics may be true or untrue.
News & Media
It is also clear that – whether true or untrue – accusations made of Alec cost members".
News & Media
Or does all non-fiction occupy a morally dubious hinterland where what's written isn't necessarily all true or untrue?
News & Media
"Until we get it set, you're always in this period when you hear rumors and things come out, true or untrue, and you just deal with it".
News & Media
It might be the evidence, it might be an overwhelming need or desire to believe that something is true – or untrue.
News & Media
There is very little information, true or untrue, about me on the web because I give so many evasive non-answers – like some of these.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
30 human-written examples
The adult population is much more worried about legal stuff; about Post-Traumatic-Stress-Disorder; about true stories or untrue stories.
Science
"From the same opinion proceeds the doctrine of Protagoras, and both doctrines must be alike true or alike untrue.
Responses to 10 statements are provided on a rating scale with response options 1 = Absolutely Untrue, 2 = Mostly Untrue, 3 = Somewhat Untrue, 4 = Can't Say True or False, 5 = Somewhat True, 6 = Mostly True, and 7 = Absolutely True.
They are neither true nor untrue, they are simply our interpretation of what we notice.
News & Media
According to the TV it was real and "reality" shows ran with this neither true, nor untrue mindfuck to score huge audiences.
News & Media
Expert writing Tips
Best practice
Use "true or untrue" when you want to emphasize the binary nature of a statement's validity, acknowledging both possibilities explicitly.
Common error
Avoid using "true or untrue" in highly formal or technical writing where more precise terms like "valid or invalid" or "accurate or inaccurate" might be more appropriate.
Source & Trust
84%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "true or untrue" functions as a compound adjective used to describe a statement, claim, or piece of information. It presents a binary choice, indicating that something is either valid or invalid, accurate or inaccurate. Ludwig's examples showcase its use in evaluating the veracity of assertions.
Frequent in
News & Media
50%
Science
30%
Academia
20%
Less common in
Formal & Business
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
The phrase "true or untrue" is a grammatically correct expression used to present a binary choice regarding the validity of a statement. As Ludwig AI confirms, it is usable in written English and serves to indicate that something is either accurate or inaccurate. While the phrase is not as common as "true or false", it remains a valid option, particularly in general discussions. In more formal settings, alternatives such as "valid or invalid" or "accurate or inaccurate" may be more appropriate. The phrase's usage is most frequent in news and media, science, and academic contexts.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
Correct or incorrect
Replaces "true" and "untrue" with more general terms for accuracy.
Accurate or inaccurate
Focuses on precision and factual correctness rather than abstract truth.
Valid or invalid
Emphasizes logical soundness and adherence to established principles.
Factual or fictional
Highlights the distinction between reality and imagination.
Real or imagined
Contrasts tangible existence with mental constructs.
Authentic or spurious
Underscores the genuineness and legitimacy of something.
Verified or unverified
Specifies whether information has been confirmed through evidence.
Substantiated or unsubstantiated
Indicates if a claim is supported by evidence or remains unproven.
Established or unproven
Focuses on whether a fact has been accepted as true or remains a hypothesis.
Confirmed or denied
Highlights the act of affirmation or rejection of a statement.
FAQs
How can I use "true or untrue" in a sentence?
You can use "true or untrue" when discussing the validity or accuracy of a statement, such as "The claim that the Earth is flat is either "true or untrue", depending on scientific evidence."
What's the difference between "true or untrue" and "true or false"?
While both phrases express a binary choice between truth and falsehood, "true or false" is more commonly used, particularly in tests and questionnaires. "True or untrue" can be used more broadly in general discussions.
Are there more formal alternatives to "true or untrue"?
Yes, in formal contexts, you might prefer phrases like "valid or invalid", "accurate or inaccurate", or "factual or fictional" depending on the specific nuance you want to convey.
Is "true or untrue" grammatically correct?
Yes, "true or untrue" is grammatically correct and understandable. Ludwig AI confirms its usability in written English.
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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
84%
Authority and reliability
4.1/5
Expert rating
Real-world application tested