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
a calamitous mistake
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "a calamitous mistake" is correct and usable in written English.
It can be used to describe a significant error that leads to disastrous consequences. Example: "The decision to ignore the warning signs proved to be a calamitous mistake for the company."
✓ Grammatically correct
News & Media
Sport
Opinion
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
8 human-written examples
If so, it was a calamitous mistake.
News & Media
It proved to be a calamitous mistake not to use an autocue.
News & Media
Almost everyone now agrees the 1982 war was a calamitous mistake, not just because the invasion was repelled, but because it was initiated by a dictatorship.
News & Media
Christensen has filled the role with distinction for the most part this season but his wayward pass in the 75th minute was a calamitous mistake that could have serious ramifications for his team's hopes of reaching the quarter-finals.
News & Media
Some of the Palestinians now thrusting themselves forward, notably Mahmoud Abbas (Abu Mazen), a former prime minister now elected as the new chairman of the Palestine Liberation Organisation, have made no secret of their belief that by launching a violent intifada after the failure of Bill Clinton's Camp David summit four years ago, the Palestinians made a calamitous mistake.
News & Media
The consensus among people I spoke to today was that the move is a calamitous mistake - the last gasp of an entombed politician reaching out of the half-closed casket only to bang the few remaining nails into his own coffin.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
49 human-written examples
But over time attitudes do change and therefore the Conservative party has to pursue these things over the long term consistently.Bagehot: What's your biggest political regret?WH: I don't think I made any calamitous mistake on any issue.
News & Media
It seems that the attack on MH17 may have been a calamitous error by ill-trained operators mistaking the passenger jet for a military target.
News & Media
That calamitous mistake led to a civil war costing perhaps 100,000 lives.
News & Media
Roberto Martínez's 10 men responded valiantly to the calamitous mistake that resulted in Howard's dismissal and Ki Sung-yueng's match-winning penalty but could find no way past Mannone.
News & Media
Even before Toure's calamitous mistake, midfielder Ryan Tunnicliffe had gone close after catching Liverpool's defence napping in the opening minute.
News & Media
Expert writing Tips
Best practice
When using "a calamitous mistake", ensure the context clearly demonstrates the severe and far-reaching consequences of the error to justify the strong adjective.
Common error
Avoid using "a calamitous mistake" for minor errors. Save this phrase for situations where the mistake genuinely leads to significant negative outcomes, such as financial ruin or severe reputational damage.
Source & Trust
94%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a calamitous mistake" functions as a noun phrase that describes a specific type of error. It typically acts as the subject or object of a sentence, emphasizing the gravity and impact of the mistake. Ludwig AI indicates that this phrase is correct and suitable for formal writing.
Frequent in
News & Media
70%
Sport
15%
Opinion
10%
Less common in
Science
0%
Formal & Business
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, "a calamitous mistake" is a phrase used to describe an error with devastating consequences. According to Ludwig AI, it's grammatically correct and suitable for use in written English. While not overly frequent, it's commonly found in news and opinion contexts. It's essential to reserve this phrase for situations where the mistake truly warrants such a strong descriptor, as overusing it can diminish its impact. Consider alternatives like "a disastrous error" or "a catastrophic blunder" depending on the specific nuance you want to convey.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
a disastrous error
Replaces "calamitous" with "disastrous", emphasizing the catastrophic nature of the mistake.
a catastrophic blunder
Substitutes both "calamitous" and "mistake" to convey a sense of immense failure and devastation.
a fateful error
Focuses on the idea that the mistake had a significant, negative impact on subsequent events.
a grievous error
Highlights the severe and regrettable nature of the error.
an unfortunate misjudgment
Softens the impact by using "unfortunate" and "misjudgment", suggesting a lack of foresight.
a monumental miscalculation
Emphasizes the scale and impact of the miscalculation.
a tragic oversight
Highlights the sad consequences resulting from a failure to notice or consider something important.
a devastating error in judgment
Elaborates on the mistake by adding "in judgment" to emphasize the faulty decision-making process and the devastating results.
a critical lapse
Indicates a temporary failure of concentration, memory, or judgment that had significant negative consequences.
a regrettable lapse in judgment
Highlights the feeling of sorrow and regret associated with the poor decision.
FAQs
How can I use "a calamitous mistake" in a sentence?
Use "a calamitous mistake" to describe an error that has devastating and far-reaching consequences. For example: "Ignoring the expert's advice proved to be "a calamitous mistake", leading to the company's bankruptcy".
What are some alternatives to "a calamitous mistake"?
You can use alternatives like "a disastrous error", "a catastrophic blunder", or "a fateful error", depending on the specific nuance you want to convey.
When is it appropriate to use the phrase "a calamitous mistake"?
It is appropriate to use "a calamitous mistake" when the error in question has caused significant damage, hardship, or suffering. The word "calamitous" implies a disaster or catastrophe, so the mistake should warrant such a strong descriptor.
What distinguishes "a calamitous mistake" from a simple error?
The key difference lies in the severity of the consequences. A simple error might cause inconvenience or minor setbacks, while "a calamitous mistake" leads to widespread damage, loss, or ruin.
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
94%
Authority and reliability
4.5/5
Expert rating
Real-world application tested