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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 doubtful
Grammar usage guide and real-world examplesUSAGE SUMMARY
'it is highly doubtful' is a correct and usable part of a sentence in written English.
It can be used to express doubt or uncertainty about something. Here is an example: "It is highly doubtful that the team will be able to win the championship without their star player who is injured."
✓ Grammatically correct
News & Media
Science
Encyclopedias
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
48 human-written examples
There is no information about statins therapy in the blood donors group, but taking into account the inclusion criteria (no symptoms of CAD and its negative family history), it is highly doubtful that these subjects were treated with statins.
Science
It probably seems odd that the sounds of a language could be of any import in explicating the philosophies of its speakers: French certainly sounds different than German, but it is highly doubtful the differences are of any philosophical import.
Science
It is highly doubtful that people vote as their papers tell them, for instance.
News & Media
And it is highly doubtful that they will feel any more comfortable with Corbyn.
News & Media
It is highly doubtful that the senator would favor either of those outcomes.
News & Media
It is highly doubtful, however, that American taxpayers are getting their money's worth.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
12 human-written examples
It's highly doubtful this option exists.
News & Media
He added: It was highly doubtful that it was going to be effective.
News & Media
It did not take long to conclude that it was highly doubtful that any such transaction had ever taken place.
News & Media
Torre said it was highly doubtful that he would activate Jason Giambi for the next round if Olerud is not ready.
News & Media
But in this cycle it's highly doubtful that they will help a Republican win the nomination.
News & Media
Expert writing Tips
Best practice
Use "it is highly doubtful" to express a strong sense of skepticism, but ensure the context supports such a firm stance. Overusing it can weaken your argument.
Common error
Avoid using "it is highly doubtful" when you mean something is impossible. "Doubtful" implies uncertainty, whereas "impossible" suggests a complete lack of possibility.
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "it is highly doubtful" serves as an evaluative expression, functioning to introduce a statement of strong skepticism or disbelief. As confirmed by Ludwig, it's a correct and usable element in English writing. The examples show it qualifying various scenarios with uncertainty.
Frequent in
News & Media
75%
Science
15%
Encyclopedias
5%
Less common in
Formal & Business
2%
Wiki
2%
Academia
1%
Ludwig's WRAP-UP
In summary, "it is highly doubtful" is a versatile phrase for expressing strong skepticism, deemed grammatically sound and widely used. While effective across diverse contexts, mainly in news and media, as shown by Ludwig, careful consideration ensures its impact. Remember to distinguish its meaning from impossibility, and explore related phrases to diversify your expressions of uncertainty.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
it is highly improbable
Emphasizes a low probability of occurrence, rather than expressing doubt.
it is very unlikely
Focuses on the low chance of something happening.
it is quite uncertain
Highlights the lack of certainty surrounding a situation.
it seems questionable
Suggests that something is open to doubt or suspicion.
it is far from certain
Indicates that there is considerable doubt or uncertainty.
it is open to question
Implies that something is debatable or not fully established.
there is little reason to believe
Expresses a lack of confidence in the truth or validity of something.
one might well doubt
Formally introduces an element of skepticism.
it remains dubious
Stresses the uncertainty and lack of clarity.
skepticism is warranted
Suggests that a cautious or questioning attitude is appropriate.
FAQs
How can I use "it is highly doubtful" in a sentence?
You can use "it is highly doubtful" to express strong skepticism about a particular outcome or belief. For example, "It is highly doubtful that the project will be completed on time given the current delays."
What phrases are similar to "it is highly doubtful"?
Alternatives include "it is highly unlikely", "it is far from certain", or "it seems questionable", each conveying a degree of uncertainty or disbelief.
What's the difference between "it is highly doubtful" and "it is impossible"?
"It is highly doubtful" implies a strong sense of skepticism or low probability, while "it is impossible" asserts that something cannot occur under any circumstances. The first suggests uncertainty, the second, a definitive negation.
Is "it is highly doubted" correct?
While grammatically understandable, "it is highly doubted" is less common and less idiomatic than "it is highly doubtful". The latter is the preferred phrasing for expressing strong doubt.
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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
4.5/5
Expert rating
Real-world application tested