Used and loved by millions
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
mistaken assumption
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "mistaken assumption" is correct and usable in written English.
It can be used when referring to a belief or idea that is incorrect or based on a misunderstanding. Example: "The project's failure was due to a mistaken assumption about the market demand."
✓ Grammatically correct
Academia
Formal & Business
News & Media
Science
Encyclopedias
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
60 human-written examples
But that's a mistaken assumption.
News & Media
But Rennie said that was a mistaken assumption.
News & Media
Carrie felt very guilty for her mistaken assumption about Galvez.
News & Media
The former president insists this is based on a mistaken assumption.
News & Media
Another mistaken assumption, Mr. Kultgen said, is that he shares qualities with his creations.
News & Media
Beth Buelow's book addresses the mistaken assumption that "entrepreneurial success belongs to extroverts".
News & Media
They may, however, be operating under the mistaken assumption that this risk is much greater in Africa than elsewhere.
News & Media
Some doctors speculate that patients may have stayed away on the mistaken assumption that the hospitals were swamped.
News & Media
On the mistaken assumption that I already knew plenty about it, I ignored Jazz for a decade.
News & Media
That was the mistaken assumption made by the Today programme, which asked Linehan if he had "changed it much".
News & Media
Nowadays, there is a mistaken assumption that all sorts of current art works belong under the banner of conceptual art.
News & Media
Expert writing Tips
Best practice
When using "mistaken assumption", clearly state what the assumption is and explain why it's incorrect to avoid ambiguity. For example: "The plan failed due to the mistaken assumption that all users had high-speed internet access."
Common error
Avoid using "mistaken assumption" without providing context or evidence to support the claim that the assumption is indeed incorrect. Failing to do so can weaken your argument and confuse your readers.
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "mistaken assumption" functions primarily as a noun phrase that identifies an incorrect belief or premise. Ludwig AI examples show it being used to pinpoint flaws in reasoning or planning. As confirmed by Ludwig AI, the phrase is considered correct and usable in written English.
Frequent in
News & Media
39%
Science
20%
Academia
11%
Less common in
Formal & Business
9%
Wiki
9%
Encyclopedias
3%
Ludwig's WRAP-UP
The phrase "mistaken assumption" is a widely used and grammatically sound expression for identifying and addressing incorrect beliefs. As Ludwig AI confirms, it's a valid and practical term found frequently in news, academic, and business contexts. When using this phrase, clarity is key: specify the assumption and explain why it's wrong. Consider alternatives like "false premise" or "erroneous belief" to fine-tune your message, always aiming for precision and avoiding assumptions that everyone shares your understanding.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
false premise
Focuses on the incorrect foundation upon which an argument or conclusion is built.
incorrect presupposition
Emphasizes the idea of something being assumed beforehand without proper justification.
erroneous belief
Highlights the incorrectness of the belief itself.
invalid premise
Indicates that the starting point for reasoning is flawed and unreliable.
flawed assumption
Highlights the presence of defects or imperfections in the assumed idea.
unfounded supposition
Implies that the assumption lacks a solid basis or evidence.
misconceived notion
Suggests that the idea is based on a misunderstanding or faulty perception.
unjustified inference
Focuses on the lack of valid reasoning connecting the assumption to any supporting evidence.
fallacious inference
Emphasizes the deceptiveness or misleading nature of the incorrect inference.
deceptive assumption
Suggests the assumption is intentionally misleading or causes confusion.
FAQs
How can I use "mistaken assumption" in a sentence?
You can use "mistaken assumption" to point out an incorrect belief that someone holds. For example: "Their strategy was based on the mistaken assumption that the competition would remain passive."
What are some alternatives to "mistaken assumption"?
You can use alternatives like "false premise", "incorrect presupposition", or "erroneous belief" depending on the specific context.
What's the difference between "mistaken assumption" and "hypothesis"?
A hypothesis is a testable explanation for a phenomenon, while a "mistaken assumption" is a belief taken as true without sufficient evidence and subsequently proven wrong. A hypothesis is proposed, while a "mistaken assumption" is often realized in retrospect.
Is it better to say "incorrect assumption" or "mistaken assumption"?
Both "incorrect assumption" and "mistaken assumption" are acceptable. "Mistaken assumption" might subtly imply a genuine error in judgment, while "incorrect assumption" is a more neutral declaration of factual inaccuracy. The best choice depends on the specific nuance you want to convey.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
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