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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
were doubtful
Grammar usage guide and real-world examplesUSAGE SUMMARY
"were doubtful" is a correct and usable sentence in written English.
It is often used in the past tense to express an opinion or attitude of uncertainty or doubt. For example, "The scientists were doubtful that their experiment would work."
✓ Grammatically correct
News & Media
Academia
Science
Alternative expressions(20)
was doubtful
lacked confidence
did not believe
were not insured
were not profitable
were not correct
were not deliberate
had no knowledge of
were not fruitful
were not aware
had no idea
were not wrong
were not convinced
were not known
were unconvinced
were not available
were not significant
were not successful
were not substantial
were not interested
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
Many were doubtful.
News & Media
They were doubtful too.
News & Media
Others were doubtful.
News & Media
But many listeners were doubtful.
News & Media
Some of the show's reviewers were doubtful.
Academia
The FARC fighters were doubtful, too.
News & Media
Not surprisingly many mission scientists were doubtful.
News & Media
"They were skeptical, they were cynical, they were doubtful.
News & Media
Nevertheless, my feelings about my own toughness levels were doubtful.
News & Media
They both said they were doubtful such evidence would emerge.
News & Media
But senators were doubtful about Mr. Sullivan's assurances.
News & Media
Expert writing Tips
Best practice
When using the phrase "were doubtful", consider adding a 'that'-clause or a 'whether'-clause after it to specify the object of their doubt. For example: They were doubtful that the plan would succeed.
Common error
Avoid using "was doubtful" with plural subjects. The correct form, "were doubtful", aligns with plural subjects to ensure grammatical accuracy.
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "were doubtful" functions as a descriptive adjective phrase, indicating a state of uncertainty or skepticism experienced by a group of individuals. This is supported by Ludwig, which confirms the phrase's correct usage in written English.
Frequent in
News & Media
62%
Academia
14%
Science
14%
Less common in
Wiki
3%
Formal & Business
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "were doubtful" is a grammatically sound and frequently used phrase to express uncertainty or skepticism. Ludwig confirms its correctness in written English. The phrase appears most commonly in news and media, followed by academia and science, suggesting a generally neutral register. When using "were doubtful", remember to use it with plural subjects and to clearly specify the object of their doubt. Consider alternatives like "had doubts" or "were skeptical" for subtle variations in meaning.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
were skeptical
Synonymous with "doubtful", but perhaps a slightly more formal term.
felt dubious
Uses a different adjective to convey a similar sense of uncertainty.
had doubts
Emphasizes the presence of specific doubts rather than a general state of uncertainty.
expressed skepticism
Highlights the outward expression of doubt or disbelief.
remained unconvinced
Focuses on the lack of persuasion or belief.
lacked confidence
Highlights a lack of assurance or certainty.
questioned the validity
Directly challenges the truth or accuracy of something.
did not believe
States a direct lack of belief or trust.
harbored suspicions
Suggests a stronger, more negative form of doubt.
were hesitant to accept
Focuses on reluctance and unwillingness to embrace an idea or proposition.
FAQs
How can I use "were doubtful" in a sentence?
You can use "were doubtful" to express a state of uncertainty or skepticism in the past. For example, "The experts "were doubtful" about the company's projections."
What's the difference between "were doubtful" and "were skeptical"?
"Were doubtful" and "were skeptical" are often used interchangeably, but "were skeptical" might imply a more critical or questioning attitude. Both indicate uncertainty, but skepticism suggests a tendency to disbelieve until proven otherwise.
Which is correct, "were doubtful" or "was doubtful"?
The correct usage depends on the subject. Use "were doubtful" for plural subjects (e.g., "They "were doubtful""), and "was doubtful" for singular subjects (e.g., "He "was doubtful"").
What can I say instead of "were doubtful"?
You can use alternatives like "had doubts", "remained unconvinced", or "were skeptical" depending on the context.
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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