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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
it is highly dubious
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "it is highly dubious" is correct and usable in written English.
You can use it when expressing skepticism or doubt about the validity or truth of a statement or claim. Example: "The evidence presented in the report is insufficient, and it is highly dubious that the conclusions drawn are accurate."
✓ Grammatically correct
News & Media
Science
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
5 human-written examples
Many mainstream economists do not question the degree of this engineering, even when it is highly dubious.
News & Media
He ended on a downbeat note that was strange, given the four years of Bush control and midterm triumph: "I think it is highly dubious that we will win the culture war.
News & Media
But it is highly dubious that it disbelieved some meta-linguistic proposition.
Science
But it is doubtful that there were at any time widespread uses of propositional attitude reporting sentences that met the necessary conditions for being conversational implicatures, as it is highly dubious that ordinary speakers ever realized that sentences like (1) and (4) say the same thing.
Science
For our purposes, we place "database" in the services category due to databases' need for a retrieval mechanism to provide their fullest value; consider that, if one did not have the need to eventually retrieve the data, then the need to store it is highly dubious.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
54 human-written examples
The more Bush officials try to explain how the president made the bogus uranium claim in his State of the Union address, despite the C.I.A. red flags and the State Department warning that it was "highly dubious," the more inexplicable it seems.
News & Media
The claim that Los Angeles will have the strongest teacher and leader force in the state, based on its own plan is highly dubious, and the magical levels of achievement promised by this plan, ensuring no more than 10% of Los Angeles schools will be labeled failing, unfortunately does not jive with the evidence either.
News & Media
While this argument is highly dubious on its face, it is worth looking more closely at what it implies.
News & Media
As ConWebWatch has detailed, WND has collaborated with Taitz on such issues, and the petition itself is highly dubious since it has no apparent verification mechanism to block multiple or ineligible signatures.
News & Media
"ONCE ajar, the door to female mystery is hard to shut again," says a seemingly wise old psychiatrist in Patrice Leconte's "Intimate Strangers" ("Confidences Trop Intimes"), opening on Friday, and while the relevance of that plummy bon mot to real life is highly dubious, its applicability to the careers of French actresses is inarguable.
News & Media
And, by the way, the claim that the plan would keep Medicare as we know it intact for Americans currently 55 or older is highly dubious.
News & Media
Expert writing Tips
Best practice
Use "it is highly dubious" to express a strong sense of skepticism about a claim or statement, especially when you have reasons to doubt its validity. Be prepared to explain why you find it dubious.
Common error
Avoid using "it is highly dubious" too frequently in your writing, as it can make your tone sound overly critical or cynical. Vary your language by using alternatives like "questionable" or "uncertain" where appropriate.
Source & Trust
88%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "it is highly dubious" functions as an evaluative statement, expressing a strong degree of doubt or skepticism about a particular claim, statement, or situation. This is consistent with Ludwig's examples which show the phrase being used to challenge assertions and question their validity.
Frequent in
News & Media
60%
Science
30%
Formal & Business
10%
Less common in
Wiki
0%
Encyclopedias
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, the phrase "it is highly dubious" is a grammatically correct and usable expression in English, used to convey significant doubt or skepticism. As Ludwig AI confirms, it's suitable for expressing reservations about claims or situations. While relatively formal, it's most commonly found in news and media, with some occurrences in scientific contexts. When you want to express strong doubt, remember that there are alternative phrases like "it is highly questionable" or "it seems highly unlikely" that can add nuance to your writing. However, it should be used judiciously to prevent sounding overly critical.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
it is highly questionable
Replaces "dubious" with "questionable", suggesting a similar level of uncertainty.
it is highly doubtful
Substitutes "dubious" with "doubtful", conveying almost the same meaning.
it is very questionable
Replaces "highly" with "very", weakening the strength of the statement a bit.
it is quite uncertain
Uses "uncertain" instead of "dubious", highlighting the lack of certainty.
it seems highly unlikely
Focuses on the improbability of something rather than its dubiousness.
there is considerable doubt
Shifts the focus to the existence of doubt itself.
the claim is dubious
Shortens the phrase and directly attributes the dubiousness to a "claim".
its veracity is suspect
Emphasizes the potential lack of truthfulness or accuracy.
serious reservations exist
Highlights the existence of significant concerns or doubts.
i have strong doubts about that
Personalizes the expression of doubt, making it a direct statement of disbelief.
FAQs
What does "it is highly dubious" mean?
The phrase "it is highly dubious" means that something is very questionable, doubtful, or unlikely to be true or valid. It expresses a strong sense of skepticism.
How can I use "it is highly dubious" in a sentence?
You can use "it is highly dubious" when you want to express that you strongly doubt the truth or validity of something. For example, "It is highly dubious that the company will meet its projected earnings this year."
What can I say instead of "it is highly dubious"?
You can use alternatives like "it is highly questionable", "it is highly doubtful", or "it seems highly unlikely depending on the context.
Is "it is highly dubious" formal or informal?
"It is highly dubious" is generally considered relatively formal, suitable for academic writing, news reports, and professional communications. In very informal settings, simpler phrases may be more appropriate.
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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
88%
Authority and reliability
4.1/5
Expert rating
Real-world application tested