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
deemed unreliable
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "deemed unreliable" is correct and usable in written English.
It can be used when indicating that something or someone has been judged or considered to be not trustworthy or dependable. Example: "The report was deemed unreliable due to the lack of credible sources."
✓ Grammatically correct
News & Media
Science
Wiki
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
52 human-written examples
Anyone who does not is deemed unreliable.
News & Media
A third was a former Communist eventually deemed unreliable by Hoover.
News & Media
In the end however UN investigators said only the accounts of 3 individuals were deemed unreliable.
News & Media
In at least 43 cases, the report said prosecutors used jailhouse informers who had been deemed unreliable.
News & Media
This anecdote was never introduced during the trial as the precise choice of words was deemed unreliable.
News & Media
But on the basis of evidence that a federal court later deemed unreliable, prison officials labeled Mr. Lira a gang member and sent him to the super-maximum-security unit at Pelican Bay State Prison, the state's toughest correctional institution.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
7 human-written examples
Merced changed his testimony so frequently that the judges deemed him unreliable.
News & Media
The judge could disallow the calls as hearsay, meaning they would be deemed too unreliable to pass court muster.
News & Media
"As a matter of law, any testimonial or documentary evidence offered by Zain at any time should be deemed invalid, unreliable and inadmissible," the court said.
News & Media
"Research 2000," "Pharos Research Group," "TCJ Research" — that's right, these are the graves of pollsters deemed too unreliable for their polls to be included in the FiveThirtyEight average.
News & Media
Women who spoke out were deemed "crazy," unreliable witnesses and reckless self-saboteurs, or they were "difficult," not likely to get the next job.
News & Media
Expert writing Tips
Best practice
When using "deemed unreliable", ensure the context clearly indicates who made the judgment and the basis for their assessment to maintain transparency and credibility.
Common error
Avoid stating that something is "deemed unreliable" without providing any supporting evidence or reasoning. This can weaken your argument and leave the reader questioning the validity of your claim.
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "deemed unreliable" functions as a predicate adjective, modifying a noun or pronoun to indicate that something has been judged as not trustworthy or dependable. As Ludwig AI confirms, it's a valid and usable expression.
Frequent in
Science
35%
News & Media
33%
Wiki
4%
Less common in
Formal & Business
2%
Encyclopedias
1%
Social Media
0%
Ludwig's WRAP-UP
The phrase "deemed unreliable" is a common and grammatically correct way to express that something has been judged as not trustworthy or dependable. As Ludwig AI confirms, this expression is usable in written English. Its usage spans various contexts, including science, news, and general writing. When using this phrase, it's best practice to clearly state who made the judgment and why, avoiding vague statements. Alternative phrases include "considered untrustworthy" and "assessed as not credible". With a substantial presence in authoritative sources like The New York Times, the phrase holds a solid place in both formal and informal communication.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
considered untrustworthy
Replaces "deemed" with a more direct synonym, focusing on a lack of trustworthiness.
regarded as undependable
Uses "regarded" instead of "deemed" and "undependable" instead of "unreliable", softening the tone slightly.
judged to be inaccurate
Focuses on the accuracy aspect of reliability, suggesting the information isn't correct.
found to be questionable
Emphasizes doubt and uncertainty surrounding the reliability.
determined to be invalid
Highlights a formal assessment leading to the conclusion of unreliability.
assessed as not credible
Focuses on the credibility aspect, implying a lack of believability.
seen as untrustworthy
Uses "seen" instead of "deemed", providing a slightly more subjective perspective.
labeled as faulty
Implies a defect or flaw contributing to the unreliability.
classified as unsound
Suggests a fundamental flaw making it unreliable.
recognized as fallible
Highlights the potential for error or failure, leading to unreliability.
FAQs
What does it mean when something is "deemed unreliable"?
When something is "deemed unreliable", it means it has been judged or considered not trustworthy or dependable. This judgment could be based on a lack of evidence, inconsistencies, or other factors that cast doubt on its validity.
How can I use "deemed unreliable" in a sentence?
You can use "deemed unreliable" to describe information, sources, or even people. For example: "The witness's testimony was "judged to be inaccurate", and the data was "considered untrustworthy"."
What are some alternatives to "deemed unreliable"?
Alternatives to "deemed unreliable" include "regarded as undependable", "assessed as not credible", or "found to be questionable". The best choice depends on the specific context.
Is it better to say "deemed unreliable" or "proven unreliable"?
"Deemed unreliable" suggests a judgment has been made, while "proven unreliable" indicates that the unreliability has been definitively demonstrated. Use "proven unreliable" only when you have concrete evidence to support the claim.
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
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested