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 thorny problem
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "a thorny problem" is correct and usable in written English.
It can be used to describe a difficult or complex issue that is challenging to resolve. Example: "The committee faced a thorny problem when trying to balance the budget while meeting the needs of all departments."
✓ Grammatically correct
News & Media
Science
Academia
Alternative expressions(20)
a tricky issue
a complex challenge
a difficult issue
a tricky situation
a thorny issue
A complex problem
a delicate matter
a challenging dilemma
a sticky wicket
a thorny subject
a daunting problem
a thorny challenge
a thorny dilemma
a sensitive problem
a troublesome problem
a cumbersome problem
a controversial problem
a tricky problem
a delicate problem
a critical problem
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
60 human-written examples
Herein lies a thorny problem.
News & Media
Still, a thorny problem remains.
News & Media
With emotion recognition, they stumbled onto a thorny problem.
News & Media
Solving planetary ozone levels is a thorny problem.
Academia
Wal-Mart presents a thorny problem for the government.
News & Media
This is a decent solution to a thorny problem.
News & Media
One of the biggest obstacles — lack of price transparency — is a thorny problem.
Academia
Medicare is a thorny problem; Social Security, by comparison, is a cinch.
News & Media
How to obtain the analytic solution of uncertain differential equation has always been a thorny problem.
It's a thorny problem: how do you map something you cannot see?
News & Media
These people present a thorny problem for Bremer and other leaders of the American occupation.
News & Media
Expert writing Tips
Best practice
When using "a thorny problem", ensure the context clearly indicates the complex and difficult nature of the issue you are describing. Avoid using it for simple inconveniences.
Common error
While "a thorny problem" is a valid phrase, overuse in casual conversation can sound unnatural. Opt for simpler terms like "challenge" or "issue" in less formal settings.
Source & Trust
86%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a thorny problem" functions as a noun phrase, where "thorny" acts as an adjective modifying the noun "problem". Ludwig AI confirms its correct usage. It typically serves to characterize a situation as complicated and difficult to resolve, often involving conflicting interests or sensitivities.
Frequent in
News & Media
65%
Science
20%
Academia
10%
Less common in
Formal & Business
3%
Wiki
1%
Social Media
1%
Ludwig's WRAP-UP
In summary, "a thorny problem" is a commonly used and grammatically sound phrase used to describe a complex and difficult issue. Ludwig AI confirms the expression's validity and appropriate usage. Its prevalence across news, scientific, and academic sources indicates its versatility. When using this phrase, consider the specific context and ensure that the level of formality aligns with the audience. Alternatives such as "a difficult issue" or "a complex challenge" may be more suitable depending on the situation. While widely accepted, overuse in informal settings can sound stilted. Remember that the 'thorny' aspect implies the potential for conflict or difficulty in finding a mutually agreeable resolution.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
a difficult issue
Replaces "problem" with "issue", a slightly broader term for something that needs to be addressed, potentially lessening the intensity.
a complex challenge
Substitutes "thorny problem" with "complex challenge", emphasizing the intricate and demanding nature of the task.
a tricky situation
Replaces the formal "problem" with the more colloquial "situation", also softens the negative connotation with the adjective "tricky".
a delicate matter
Replaces "problem" with "matter", highlighting the sensitivity and potential for causing offense or complications.
a challenging dilemma
Replaces "thorny" and "problem" with stronger terms highlighting the difficult choice between alternatives.
a perplexing puzzle
Changes the metaphor to a "puzzle", emphasizing the confusing and intellectually demanding aspect of the problem.
a tough nut to crack
Uses an idiomatic expression to describe a problem that is particularly resistant to solution.
a sticky wicket
Employs a British idiom, suggesting a difficult or awkward situation, which may not be universally understood.
an intractable predicament
Uses more formal and intense vocabulary to emphasize the unsolvable nature of the problem.
a Gordian knot
Relies on a historical allusion to describe a problem that seems impossible to solve in a straightforward manner.
FAQs
How to use "a thorny problem" in a sentence?
Use "a thorny problem" to describe a situation that is complex, difficult, and likely to cause disagreement or require careful handling. For example: "Balancing the budget is "a thorny problem" for the city council".
What can I say instead of "a thorny problem"?
You can use alternatives like "a difficult issue", "a complex challenge", or "a tricky situation" depending on the specific nuance you want to convey.
Which is correct, "a thorny problem" or "a thorny issue"?
Both ""a thorny problem"" and "a thorny issue" are correct and widely used. The choice depends on whether you want to emphasize the challenging nature of a "problem" or the broader implications of an "issue".
What's the difference between "a thorny problem" and "a complex problem"?
"A thorny problem" implies not only complexity but also the potential for conflict, disagreement, or difficulty in handling. "A complex problem" simply highlights the intricate nature of the issue.
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
4.6/5
Expert rating
Real-world application tested