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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
is doubtful
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "is doubtful" is correct and usable in written English.
It can be used to express uncertainty or skepticism about a statement, situation, or outcome. Example: "The outcome of the experiment is doubtful given the inconsistent results we have observed."
✓ 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
55 human-written examples
Mr Piketty is doubtful.
News & Media
On that Harari is doubtful.
News & Media
Fontana is doubtful.
News & Media
Bleasdale is doubtful.
News & Media
But Twagirimana is doubtful.
News & Media
However it is doubtful.
News & Media
A glutton, Antony is doubtful.
News & Media
Danny Welbeck (muscle) is doubtful.
News & Media
So the future is doubtful.
News & Media
But it is doubtful Agus will qualify.
News & Media
Such an outcome in Syria is doubtful.
News & Media
Expert writing Tips
Best practice
Use "is doubtful" when expressing uncertainty based on available evidence or reasonable assumptions. It's suitable for scenarios where a conclusive answer is lacking.
Common error
Avoid relying heavily on "is doubtful" in formal academic or scientific papers. Consider using stronger, more precise language to articulate your reservations or uncertainties.
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "is doubtful" functions as an evaluative adjective phrase indicating a degree of uncertainty or skepticism. Ludwig AI confirms its role in expressing doubt, seen in examples where outcomes or statements are questioned.
Frequent in
News & Media
49%
Science
22%
Encyclopedias
12%
Less common in
Wiki
6%
Formal & Business
6%
Social Media
0%
Ludwig's WRAP-UP
In summary, the phrase "is doubtful" is a versatile way to express uncertainty or skepticism, as affirmed by Ludwig AI. It functions as an adjective phrase and enjoys widespread use across diverse contexts like news, science, and encyclopedias. While grammatically correct and frequently employed, it's advisable to consider more precise alternatives in highly formal writing. Related phrases include "is questionable" and "is uncertain", offering subtle variations in meaning. Remember to use "is doubtful" when you want to express reservations based on available evidence or reasonable assumptions.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
is questionable
Indicates uncertainty or disbelief about the validity or accuracy of something.
is uncertain
Suggests a lack of sureness or predictability regarding an outcome or situation.
is dubious
Implies doubt or suspicion about the authenticity or reliability of something.
is unlikely
Expresses a low probability of something occurring or being true.
is improbable
Conveys a sense of something being not likely to happen or be valid.
is open to question
Indicates that something is not settled and can be challenged or debated.
is not definitive
Suggests that something is not conclusive or final.
is subject to doubt
Highlights that something is susceptible to being questioned or doubted.
remains to be seen
Indicates that the outcome or truth of something is yet to be determined.
is far from certain
Emphasizes a high degree of uncertainty or doubt.
FAQs
How can I use "is doubtful" in a sentence?
You can use "is doubtful" to express uncertainty or skepticism about a statement, situation, or outcome. For example: "It "is doubtful" that the project will be completed on time."
What phrases can I use instead of "is doubtful"?
Alternatives include "is questionable", "is uncertain", or "is dubious", depending on the specific nuance you wish to convey.
When is it appropriate to use "is doubtful" in writing?
It's appropriate when expressing a degree of uncertainty or skepticism. However, in formal writing, consider whether a more precise term might better convey your meaning.
What is the difference between "is doubtful" and "is unlikely"?
"Is doubtful" suggests uncertainty based on evidence, while "is unlikely" implies a low probability. The choice depends on whether you're emphasizing the lack of certainty or the low chance of occurrence.
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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
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested