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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
I challenge that
Grammar usage guide and real-world examplesUSAGE SUMMARY
"I challenge that" is correct and can be used in written English.
You would use it to express disagreement or disbelief. For example, if your friend told you they think eating French fries for breakfast is a great idea, you could respond with, "I challenge that!".
✓ Grammatically correct
News & Media
Wiki
Forbes
The Guardian
Huffington Post
The New York Times
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
12 human-written examples
But in this week's Currents column, I challenge that idea.
News & Media
I challenge that L.S.S.I. will be able to do much better".
News & Media
And I challenge that".
Wiki
I challenge that notion.
News & Media
I challenge that assertion.
News & Media
While some argue that the ceremonial deism we see in our military is encompassing of all people, I challenge that notion, along with tens of thousands of others.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
48 human-written examples
I would challenge that assumption.
News & Media
I cannot challenge that; it might be true.
News & Media
"I would challenge that," Mr. Palladino said of the breath tests.
News & Media
I would never challenge that.
News & Media
"I have to challenge that," he said.
News & Media
Expert writing Tips
Best practice
Use "I challenge that" to respectfully express disagreement and invite further discussion or evidence. Be prepared to support your challenge with reasoning or evidence.
Common error
Avoid using "I challenge that" as a simple dismissal. Always provide context or reasoning to support your challenge, or risk sounding confrontational or dismissive. For example, instead of saying just "I challenge that", say "I challenge that because..." and provide your reasons.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The primary grammatical function of "I challenge that" is to serve as an interjection expressing disagreement or opposition. It directly confronts a previously stated idea or assertion, signaling a differing viewpoint. As Ludwig AI confirms, this phrase can be used in written English.
Frequent in
News & Media
70%
Wiki
15%
Forbes
5%
Less common in
Formal & Business
3%
Science
3%
Encyclopedias
1%
Ludwig's WRAP-UP
In summary, "I challenge that" is a commonly used phrase to express disagreement or opposition. It is grammatically correct and appears frequently in news, media and wiki contexts. While generally acceptable, it's essential to provide context when using it to avoid sounding dismissive. Alternatives like "I dispute that" or "I question that" can be used for a more formal tone. Ludwig AI confirms its usability in various writing contexts, making it a valuable expression for expressing your point of view.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
I dispute that
Focuses on formally disagreeing with a statement.
I question that
Indicates doubt or uncertainty about a statement's validity.
I doubt that
Expresses a lack of belief in the truth or likelihood of something.
I contest that
Suggests a more formal and argumentative disagreement.
I refute that
Implies presenting evidence to disprove a statement.
I deny that
States that something is not true or doesn't exist.
I object to that
Expresses opposition to something, often on moral or ethical grounds.
I take issue with that
Indicates disagreement with a particular point or aspect.
That's not the case
Directly contradicts a previous statement.
I beg to differ
A polite but firm expression of disagreement.
FAQs
How can I use "I challenge that" in a sentence?
You can use "I challenge that" to express disagreement with a statement or idea. For example, "You claim that the new policy will improve productivity, but "I challenge that", as it seems to add more bureaucracy."
What's a more formal alternative to "I challenge that"?
For a more formal tone, consider using phrases like "I dispute that" or "I question that" instead of "I challenge that".
What's the difference between "I challenge that" and "I disagree"?
"I disagree" simply states your differing opinion. "I challenge that" implies a more active opposition, suggesting you have reasons or evidence to counter the original statement.
Is it always appropriate to use "I challenge that"?
While generally acceptable, consider your audience and the context. In some situations, a more diplomatic approach, such as asking clarifying questions, might be more effective than directly saying ""I challenge that"".
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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