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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
a doubtful assertion
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "a doubtful assertion" is correct and usable in written English.
It can be used when referring to a statement or claim that lacks certainty or confidence. Example: "The scientist made a doubtful assertion about the effectiveness of the new drug, prompting further investigation."
✓ Grammatically correct
News & Media
Science
Encyclopedias
Alternative expressions(2)
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
1 human-written examples
That has been a doubtful assertion ever since the cold war – even more so after Libya.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
59 human-written examples
A particularly doubtful assertion made by Enron Online was the so-called notional revenue it reported, Mr. McCullough said.
News & Media
The general election debate over the NHS has already become an exchange of insults, doubtful assertions and unreliable statistics of the kind voters find so unedifying.
News & Media
That may seem like a doubtful proposition.
News & Media
She gave me a doubtful look.
News & Media
A British summer is usually a doubtful, fleeting thing.
News & Media
She had been a doubtful starter with a bruised heel.
News & Media
I make a doubtful face, but she insists.
News & Media
Longevity alone strikes me as a doubtful premise.
News & Media
douarrha had become a nomen dubium — a doubtful name.
News & Media
Hang about," he said, with a doubtful frown.
News & Media
Expert writing Tips
Best practice
Use "a doubtful assertion" when you want to express uncertainty or skepticism about a claim, but avoid using it excessively in formal writing, as it can come across as dismissive. Choose synonyms like "questionable claim" or "dubious statement" for variety.
Common error
Avoid using "a doubtful assertion" repeatedly in academic papers or professional reports. Vary your language with more nuanced alternatives like "unsubstantiated claim" or "tenuous argument" to maintain a professional tone.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a doubtful assertion" functions as a noun phrase, where "doubtful" modifies the noun "assertion". It indicates a statement or claim that is questionable or uncertain. Ludwig confirms its usability in written English.
Frequent in
News & Media
50%
Science
30%
Encyclopedias
20%
Less common in
Formal & Business
0%
Reference
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, "a doubtful assertion" is a grammatically sound and frequently used phrase to express skepticism or uncertainty about a statement. Ludwig's analysis confirms its correctness and provides various examples from reputable sources such as The Guardian and The New York Times. While generally neutral in register, it's advisable to use synonyms like "questionable claim" or "dubious statement" for nuanced expression and to avoid overuse, especially in formal contexts. The phrase sees frequent use in the contexts of News & Media, Science and Encyclopedias.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
a questionable statement
Replaces "assertion" with "statement" and "doubtful" with "questionable", softening the skepticism slightly.
a dubious claim
Substitutes "doubtful" with "dubious" and "assertion" with "claim", maintaining a similar level of skepticism.
a suspect declaration
Uses "suspect" instead of "doubtful" and "declaration" for "assertion", implying potential deception.
a tenuous argument
Replaces "doubtful" with "tenuous" and "assertion" with "argument", suggesting the claim is weakly supported.
an unconvincing proposition
Substitutes "doubtful" with "unconvincing" and "assertion" with "proposition", highlighting the lack of persuasiveness.
a shaky premise
Uses "shaky" instead of "doubtful" and "premise" for "assertion", emphasizing the instability of the foundation.
a challengeable contention
Replaces "doubtful" with "challengeable" and "assertion" with "contention", highlighting the potential for dispute.
a flimsy pretext
Substitutes "doubtful" with "flimsy" and "assertion" with "pretext", suggesting the claim is weak and possibly deceptive.
a specious argument
Uses "specious" instead of "doubtful" and "argument" for "assertion", implying that the claim seems plausible but is actually false.
a precarious statement
Replaces "doubtful" with "precarious" and "assertion" with "statement", suggesting the claim is unstable and risky.
FAQs
How can I use "a doubtful assertion" in a sentence?
You can use "a doubtful assertion" to express skepticism about a claim. For example: "The scientist made "a doubtful assertion" about the new drug's effectiveness".
What are some alternatives to "a doubtful assertion"?
Alternatives include "a questionable statement", "a dubious claim", or "a tenuous argument", depending on the specific nuance you want to convey.
Is "a doubtful assertion" a formal or informal phrase?
"A doubtful assertion" is generally suitable for neutral to formal contexts. However, in very formal writing, consider using more precise language like "an unsubstantiated claim" or "an unverified statement".
What's the difference between "a doubtful assertion" and "a false statement"?
"A doubtful assertion" suggests uncertainty or skepticism about the truthfulness of a claim, while "a false statement" implies that the claim is definitively untrue. The former expresses doubt, while the latter declares falsehood.
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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
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested