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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 was in error
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "I was in error" is correct and usable in written English.
You can use it when acknowledging a mistake or misunderstanding in a formal or polite context. Example: "After reviewing the facts, I must admit that I was in error regarding the details of the case."
✓ Grammatically correct
News & Media
Academia
Science
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
4 human-written examples
When I realized I was in error, not her, I did not apologize.
News & Media
I received a clarification that this kickass band with a kickass acronym is not formally associated with TEP, and thus I was in error.
A call to Ms. Clinton's press office brought a ferocious response from a senior staff member that I was in error, a grave one, and that the woman I had seen was actually the niece of the owner of the bar, who looked just like Ms. Clinton.
News & Media
He issued a statement Tuesday, saying, "I was in error to remark on the University of Washington football program and am embarrassed over this development...
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
56 human-written examples
As I mentioned in my post about Count II of the indictment, I'm not an expert on these Texas statutes; if I am in error here, please let me know, and I'll be glad to correct the error.
News & Media
However, if I judge that the cherry would look gray in bright light, I'm in error.
Science
This "evil genius" (or deceiving "God, or whatever I may call him," AT 7 24) has given me flawed cognitive faculties, such that I am in error even about epistemically impressive matters — even the simple matters that seem supremely evident.
Science
"If I am in error," Winslow writes, "to the person hiding behind Pearson I would say, To be taken for Pynchon is no small compliment but an enormous one, and your mimetic abilities in emulation of his sensibility are admirable.
News & Media
where during_error is the period when flow i is in channel error.
When I pointed out that 13.8 billion years of expansion is not the same as 13.8 billion LIGHT years of expansion, he asserted that I was in fundamental error on that point.
Academia
"I was falsely accused, and I think the jury was in error," Mr. Paternoster said in a telephone interview last week.
News & Media
Expert writing Tips
Best practice
Use "I was in error" in situations where you want to acknowledge a mistake formally and politely, especially in writing or professional contexts.
Common error
Avoid using "I was in error" in very informal settings where simpler phrases like "I was wrong" or "I made a mistake" would be more appropriate and natural.
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "I was in error" functions as a statement of admission or acknowledgment of a mistake or incorrect judgment. It serves to correct a previous statement or understanding. Ludwig AI confirms its correctness and usability in written English.
Frequent in
News & Media
35%
Academia
33%
Science
32%
Less common in
Formal & Business
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
The phrase "I was in error" is a formal way to admit a mistake or misjudgment. It's grammatically correct and suitable for both written and spoken English, primarily in contexts that require a degree of formality. As Ludwig AI confirms, this phrase is usable in written English for acknowledging a mistake. Alternatives like "I made a mistake" or "I was wrong" are simpler and more appropriate for informal settings. While frequently found in News & Media, Academia, and Science, its use should be considered in relation to the tone and context of the conversation or writing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
I made a mistake
Directly admits fault; simpler and more common.
I was mistaken
Similar in meaning but slightly less formal.
I erred
More formal and concise way of admitting a mistake.
I was wrong
Simple and direct statement of being incorrect.
My assessment was incorrect
More formal and specific to assessments or judgments.
I was incorrect
Similar to "I was wrong" but slightly more formal.
I stand corrected
Acknowledges correction, often after being corrected by someone else.
I miscalculated
Specific to errors in calculation or estimation.
I was under the wrong impression
Indicates a misunderstanding rather than a direct error.
I jumped to the wrong conclusion
Highlights an error in reasoning or inference.
FAQs
What can I say instead of "I was in error"?
You can use alternatives like "I made a mistake", "I was mistaken", or "I was wrong" depending on the context.
Is "I was in error" formal or informal?
The phrase "I was in error" tends to be more formal. Simpler phrases like "I was wrong" are more common in informal settings.
How to use "I was in error" in a sentence?
Use "I was in error" to acknowledge a mistake or misjudgment. For example: "After reviewing the data, I realized I was in error regarding the initial projections."
What is the difference between "I was in error" and "I made an error"?
"I was in error" is a statement of being incorrect, while "I made an error" emphasizes the action of making a mistake. They are largely interchangeable but have slightly different connotations.
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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
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested