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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
rare case
Grammar usage guide and real-world examplesUSAGE SUMMARY
"rare case" is correct and usable in written English.
You might use it to describe an infrequent situation or uncommon occurrence. For example, "The toxic insect bite was a rare case that the doctor had only seen once before in his medical career."
✓ Grammatically correct
News & Media
Science
Formal & Business
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
54 human-written examples
But he's a rare case.
News & Media
Kiwanuka is not a rare case.
News & Media
But Red Hat is a rare case.
News & Media
But this is a rare case.
News & Media
This is a rare case of some justice being done.
News & Media
Call it a rare case of trans-Atlantic convergence.
News & Media
Dylan Klebold was an extreme and rare case.
News & Media
It's a rare case where endorsements could backfire.
News & Media
(In this rare case, according to Tyco, it's the investors who took a bath).
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
2 human-written examples
Rare cases can be fatal.
News & Media
These are the rare cases.
News & Media
Expert writing Tips
Best practice
When employing "rare case" in formal writing, ensure the surrounding language maintains a professional and objective tone.
Common error
Avoid using "rare case" hyperbolically. Ensure that the situation genuinely deviates from the norm to maintain credibility.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "rare case" primarily functions as a noun phrase, often serving as a subject complement or object in a sentence. It identifies a specific instance that deviates from the norm. As Ludwig suggests, it's used to describe an infrequent or uncommon occurrence.
Frequent in
News & Media
61%
Science
24%
Formal & Business
6%
Less common in
Wiki
2%
Reference
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, the phrase "rare case" is a grammatically sound and frequently used noun phrase, primarily employed to emphasize the exceptional nature of a specific instance or situation. As Ludwig AI indicates, it is suitable for describing infrequent or uncommon occurrences. Predominantly found in news, scientific, and business contexts, its register is generally neutral to professional. When using this phrase, ensure the described situation genuinely deviates from the norm to maintain credibility and avoid hyperbolic statements.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
uncommon situation
Focuses on the infrequency of the situation.
exceptional instance
Emphasizes the deviation from the norm.
infrequent occurrence
Highlights how seldom something happens.
isolated incident
Stresses the lack of connection to other events.
atypical example
Underscores the non-representative nature.
unusual event
Focuses on the deviation from typical events.
extraordinary circumstance
Emphasizes the remarkable nature of the situation.
outlier situation
Highlights a statistical deviation.
aberrant situation
Emphasizes deviation from the standard or expected.
unique occurrence
Highlights the singularity and distinctiveness of the event.
FAQs
How can I use "rare case" in a sentence?
You can use "rare case" to describe an unusual situation. For example, "This instance of complete consensus is a "rare case" in this contentious debate".
What phrases are similar to "rare case"?
Similar phrases include "uncommon situation", "exceptional instance", or "infrequent occurrence", each carrying slightly different connotations.
Is it always appropriate to use "rare case" in formal writing?
Yes, "rare case" is suitable for formal writing, especially when supported by evidence or data that confirms the unusual nature of the situation. Consider using more precise language depending on the specific field (e.g., "statistical outlier").
What's the difference between "rare case" and "uncommon situation"?
While similar, "rare case" often implies a specific instance or example, whereas "uncommon situation" may refer to a broader set of circumstances. The choice depends on whether you are highlighting a specific event or a general condition.
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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