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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
doubtful of
Grammar usage guide and real-world examplesUSAGE SUMMARY
'doubtful of' is a correct and usable part of a sentence in written English.
You can use it when expressing doubt or suspicion about something. For example: She was doubtful of his sincerity when he offered her a job.
✓ Grammatically correct
News & Media
Encyclopedias
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
Are we so doubtful of our worth that others must attest to it?
News & Media
Even among the most reluctant and doubtful of writers, this willfulness must emerge.
News & Media
Some people, doubtful of the government statistics, suspect that the numbers are even higher.
News & Media
Vitoria was doubtful of the justice of the Spanish conquest of the New World.
Encyclopedias
We moved on quickly that afternoon, doubtful of ever returning, especially as the wine proved disappointing.
News & Media
While Railtrack is keen on this, ministers are doubtful of the benefits.
News & Media
There to back up the men in the mountains, they were doubtful of seeing any action.
News & Media
Famously, he was doubtful of Henri Cartier-Bresson's idea of a fleeting and impromptu "decisive moment".
News & Media
But Finlayson is doubtful of that: there are simply too many bones, he said.
News & Media
But the forum he chose left critics doubtful of his good faith.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
1 human-written examples
I am doubtful of this.
News & Media
Expert writing Tips
Best practice
Use "doubtful of" to express a lack of certainty or confidence in something. For stronger impact, follow it with a specific reason for your doubt. For example, "I am doubtful of their promises because they have broken them before."
Common error
Avoid using "doubtful of" with abstract nouns that cannot logically inspire doubt. Instead of saying "He was doubtful of success", which is vague, specify what he doubted: "He was doubtful of the team's ability to succeed".
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "doubtful of" functions as an adjectival phrase followed by a preposition, modifying a noun or pronoun to express a state of uncertainty, skepticism, or lack of confidence regarding something. Ludwig AI confirms its correct usage in various contexts.
Frequent in
News & Media
50%
Science
20%
Encyclopedias
15%
Less common in
Wiki
10%
Formal & Business
5%
Reference
0%
Ludwig's WRAP-UP
In summary, "doubtful of" is a versatile phrase used to express a lack of certainty or skepticism. Ludwig AI confirms its grammatical correctness and common usage across various contexts. It functions as an adjectival phrase, modifying nouns or pronouns to indicate uncertainty. While alternatives like "skeptical about" and "unsure about" exist, "doubtful of" often implies a slightly stronger degree of disbelief. This phrase frequently appears in news and media, science, and encyclopedias, maintaining a neutral to formal tone. Remember to use it thoughtfully and provide specific reasons when expressing your doubts for clarity.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
dubious about
Indicates uncertainty or hesitation, differing slightly in connotation.
skeptical about
Emphasizes disbelief or questioning attitude.
unsure about
Focuses on a lack of certainty or confidence.
questioning
Highlights the act of asking or having doubts.
unconvinced about
Stresses the absence of persuasion or belief.
hesitant about
Implies a reluctance or unwillingness due to uncertainty.
suspicious of
Suggests distrust or a belief that something is wrong.
wavering on
Implies indecision or fluctuation in belief.
having reservations about
Indicates underlying concerns or doubts.
not confident in
Highlights a lack of trust or assurance.
FAQs
How can I use "doubtful of" in a sentence?
Use "doubtful of" to express uncertainty or skepticism about something. For example, "She was "doubtful of" his claims".
What are some alternatives to "doubtful of"?
Alternatives include "skeptical about", "unsure about", and "dubious about", depending on the context.
Is there a difference between "doubtful of" and "doubtful about"?
While both are acceptable, "doubtful of" is slightly more formal. "Doubtful about" is more common in everyday conversation. However, the meaning remains essentially the same.
When should I use "doubtful of" instead of "uncertain about"?
"Doubtful of" often implies a stronger degree of skepticism or disbelief compared to "uncertain about", which simply suggests a lack of certainty.
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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
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested