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
has been called into question
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "has been called into question" is correct and usable in written English.
It is typically used to indicate that the validity or truth of something is being doubted or challenged. Example: "The effectiveness of the new policy has been called into question after several reports of its failure to produce the desired outcomes."
✓ Grammatically correct
News & Media
Science
Academia
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
Calhoun's own future has been called into question.
News & Media
Indeed, Commerzbank's very survival has been called into question.
News & Media
Once again Hague's judgement has been called into question.
News & Media
But now even this "promise" has been called into question.
News & Media
Now all of that has been called into question.
News & Media
The effectiveness of operating room headgear in preventing airborne contamination has been called into question.
Recently, however, the magnitude of energy savings associated with CFLs has been called into question.
Science
As a result the automaticity of semantic activation has been called into question.
Science
Furthermore, the accuracy of these retrospective data collection in these databases has been called into question.
Science
Even the original "half the UK will be obese by 2050" has been called into question.
News & Media
This is not the first occasion that Benítez's future has been called into question.
News & Media
Expert writing Tips
Best practice
Use "has been called into question" when you want to express that the validity or truth of something is being doubted or challenged. Ensure the context clearly indicates what is being questioned and why.
Common error
Avoid using "has been called into question" too frequently in formal or academic writing. While grammatically correct, it can sometimes sound less direct than alternatives like "challenged" or "disputed". Consider varying your phrasing for clarity and impact.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "has been called into question" functions as a means to express doubt, skepticism, or the act of challenging the validity or truthfulness of something. Ludwig AI confirms that this phrase is grammatically correct and frequently used.
Frequent in
News & Media
42%
Science
40%
Academia
10%
Less common in
Wiki
4%
Formal & Business
4%
Social Media
0%
Ludwig's WRAP-UP
In summary, the phrase "has been called into question" effectively communicates that the validity or truth of something is under doubt or challenge. Ludwig confirms its grammatical correctness and usability across various contexts. The analysis indicates it's frequently used in news, scientific, and academic domains, suggesting a neutral to professional register. When writing, consider balancing its use with more direct alternatives like "challenged" or "disputed" for impact. The phrase's frequent appearance across authoritative sources like The New York Times and BBC underscores its widespread acceptance and utility in formal communication.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
has been questioned
A more direct and simple way of expressing doubt.
has been brought into doubt
Replaces "question" with "doubt", emphasizing uncertainty.
has been thrown into doubt
Emphasizes the introduction of uncertainty.
has been cast into doubt
Similar to "thrown into doubt", but with a slightly different emphasis.
has been challenged
Focuses on the act of disputing or contesting something.
has been disputed
Similar to "challenged", highlighting disagreement.
is under scrutiny
Indicates close and critical examination.
its validity is in doubt
Shifts the focus to the validity itself being questionable.
is open to debate
Suggests the matter is not settled and can be argued.
is subject to debate
Similar to 'is open to debate', indicating an ongoing discussion or argument.
FAQs
How can I use "has been called into question" in a sentence?
Use "has been called into question" to indicate that something's validity or truth is being doubted. For example, "The accuracy of the report "has been called into question" due to conflicting data".
What can I say instead of "has been called into question"?
Alternatives include "has been challenged", "has been disputed", or "is under scrutiny" depending on the nuance you want to convey.
Is it appropriate to use "has been called into question" in academic writing?
Yes, "has been called into question" is appropriate in academic writing, but consider using more direct alternatives like "challenged" or "disputed" for clarity and impact. Also check "is under scrutiny".
What's the difference between "has been called into question" and "has been questioned"?
"Has been called into question" implies a deeper level of doubt or challenge, suggesting that fundamental aspects are being scrutinized. "Has been questioned" is a more general term for asking about something.
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
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested