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
an uncommon challenge
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "an uncommon challenge" is correct and usable in written English.
You can use it to describe a situation or task that is not frequently encountered and may require special skills or effort to overcome. Example: "The project presented an uncommon challenge that tested the team's creativity and problem-solving abilities."
✓ Grammatically correct
News & Media
Science
Academia
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
1 human-written examples
Her dismal public standing on questions of candor, combined with decades of conspiracy theories about her health, had already produced an uncommon challenge for aides and supporters seeking to tamp down speculation about her physical condition.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
59 human-written examples
Take Bob Morris's Talk article from the November 17 , 1997 issue of the magazine, on the art of celebrating charity donors:> At a benefit for the Robert F. Kennedy organization, Al Gore made an awkward leap of syntax that patched cause and honorees together — a not uncommon challenge for benefit organizers.
News & Media
With the Erdogan government facing an uncommon popular challenge after 10 years in power, an MP from the governing AK party angered the protesters, tweeting: "It looks like some people needed gas".
News & Media
We need uncommon women standing with uncommon men because our world faces uncommon challenges.
News & Media
"This is an uncommon predicament and a core challenge in working to bring the budget back to balance".
News & Media
As the war in Gaza burned through its 14th day, Arab governments have felt their legitimacy challenged with an uncommon virulence.
News & Media
Isabella Finkelstein: You do have a challenge, and not an uncommon one.
Science & Research
BACKGROUND: Proximal migration of a biliary stent is an uncommon event, but its management can present a technical challenge to the therapeutic endoscopist.
Academia
Intussusception is an uncommon cause of abdominal pain in adults and poses diagnostic challenges for emergency physicians, due to its varied presenting symptoms and time course.
Matt's struggle is not an uncommon one in families, whether family members work with each other or just face the day to day challenges that come up.
News & Media
Rudolph had an uncommon upbringing.
News & Media
Expert writing Tips
Best practice
When using "an uncommon challenge", ensure the context clearly establishes the specific factors making the challenge unique or infrequent. Provide enough detail to justify the description.
Common error
Avoid using "an uncommon challenge" to describe routine or typical difficulties. This dilutes the impact of the phrase and suggests a lack of awareness about truly exceptional circumstances.
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "an uncommon challenge" functions as a noun phrase, where "uncommon" modifies "challenge". It highlights the exceptional or infrequent nature of a particular difficulty or task. As Ludwig AI suggests, it describes situations needing specific skills.
Frequent in
News & Media
40%
Science
30%
Academia
30%
Less common in
Formal & Business
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, "an uncommon challenge" is a grammatically correct noun phrase used to describe a rare or unique difficulty. As noted by Ludwig AI, the phrase is suitable for professional communication and appears primarily in news, science, and academic contexts. When employing this phrase, ensure the context justifies the description of uniqueness. Related alternatives include phrases like "a rare difficulty" or "an unusual predicament". While not overly frequent, it's a valuable expression for accurately portraying exceptional circumstances.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
a rare difficulty
Emphasizes the infrequency of the difficulty, highlighting its exceptional nature.
an unusual predicament
Focuses on the atypical and potentially awkward or dangerous nature of the situation.
a singular obstacle
Highlights the unique and distinct nature of the impediment.
an exceptional hurdle
Stresses the extraordinary nature of the obstacle to be overcome.
a unique struggle
Emphasizes the distinct and unparalleled nature of the effort required.
an unprecedented test
Highlights the lack of prior instances or experiences, indicating a novel trial.
a remarkable trial
Focuses on the notable and significant nature of the difficulty.
an extraordinary problem
Highlights the exceptional and unusual nature of the issue.
a peculiar issue
Focuses on the odd and strange nature of the problem.
a novel endeavor
Emphasizes the new and original nature of the undertaking, suggesting potential difficulties.
FAQs
How can I effectively use "an uncommon challenge" in a sentence?
Use "an uncommon challenge" to describe situations that are rare and demand specific skills or approaches. For example, "Developing a sustainable energy source for the island presented "an uncommon challenge" to the engineering team".
What phrases are similar to "an uncommon challenge"?
Similar phrases include "a rare difficulty", "an unusual predicament", or "a unique struggle". The best choice depends on the specific nuance you want to convey.
Is it appropriate to use "an uncommon challenge" in formal writing?
Yes, "an uncommon challenge" is suitable for formal writing, especially when describing complex or infrequent issues. The level of formality is determined by the overall tone and context of the writing, not the phrase itself.
What's the difference between "an uncommon challenge" and "a common challenge"?
"An uncommon challenge" describes a situation that is not frequently encountered, requiring specialized expertise. In contrast, "a common challenge" refers to a frequently occurring problem that is generally well-understood.
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
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested