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 knotty question
Grammar usage guide and real-world examplesUSAGE SUMMARY
"a knotty question" is a correct and commonly used phrase in written English.
It means a difficult or complicated question or problem. Example: "The panel of experts spent hours trying to unravel the knotty question of how to reduce carbon emissions without damaging the economy."
✓ Grammatically correct
News & Media
Science
Alternative expressions(20)
a complex issue
a difficult problem
a challenging dilemma
A thorny issue
A thorny question
a troubling question
a key question
a tough question
a sticky question
a sensitive question
a troublesome question
a difficult question
a contentious question
a complicated question
a daunting question
a tricky question
a thorny question
a delicate question
a challenging question
a serious question
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
That may be a legally sensible approach to a knotty question combining genetics, economics and ethics.
News & Media
If that's a knotty question, so is the broader one we face as a species.
News & Media
In a second decision issued Wednesday, the court sidestepped a knotty question in a case over California's attempt to cut Medicaid payment rates.
News & Media
So Maine, like other states, has found itself facing a knotty question: voters have said they wanted medical marijuana available, but how can it be legally distributed?
News & Media
Which raises a knotty question: How many tokes can a driver take before the ability to control a vehicle is compromised to the point of being a danger on the road?
News & Media
How this might play out in Westchester, where the median price of a home is now only a rock-skip from half a million dollars, is a knotty question.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
47 human-written examples
That's a knottier question.
News & Media
It is a vexed and knotty question: Is Showalter in some way devaluing the achievements of the greatest American writers by giving equal or greater space to the less talented?
News & Media
The European Space Agency's Planck satellite, launched in 2009 and due to release a fresh trove of results in the coming months, will provide significantly higher sensitivity and resolution - probably putting an end to the knotty question altogether.
News & Media
In his study, Judge Posner considered how often the Supreme Court had reversed the Ninth Circuit in a way that suggested simple error by the lower court, as opposed to a principled disagreement on a knotty legal question.
News & Media
But that argument offers us no answers to the knotty question of freedom of expression, an idea to which we all think we subscribe.
News & Media
Expert writing Tips
Best practice
Use "a knotty question" to introduce a topic that requires careful consideration and admits no easy answers. It signals to the reader that the issue is complex and requires nuanced understanding.
Common error
While "a knotty question" is appropriate for complex issues, avoid using it repeatedly in the same piece of writing. Vary your language with synonyms like "complex issue" or "challenging dilemma" to maintain reader engagement.
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a knotty question" functions as a noun phrase that typically serves as the subject or object of a sentence. It introduces a topic that is complex and challenging. Ludwig's examples demonstrate its usage in diverse contexts, from legal matters to scientific inquiries.
Frequent in
News & Media
79%
Science
12%
Formal & Business
4%
Less common in
Academia
2%
Encyclopedias
1%
Wiki
1%
Ludwig's WRAP-UP
In summary, "a knotty question" is a grammatically sound and relatively common phrase used to denote a complex, intricate, and challenging issue. Ludwig AI confirms its correctness and prevalence across diverse sources, particularly news media. While versatile, it's important to wield it judiciously, avoiding overuse and considering alternatives like "a complex issue" or "a difficult problem" to maintain writing freshness. Its presence signals a topic needing careful thought, making it apt for formal and analytical contexts.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
A thorny issue
Similar to "knotty" but emphasizes the potential for causing pain or conflict.
A thorny question
Emphasizes the difficulties and potential negative consequences associated with the question.
A complex issue
Highlights the multifaceted nature of the topic.
A complicated matter
Stresses the intricacy and complexity of the subject at hand.
An intricate problem
Focuses on the detailed and complex nature of the problem.
A difficult problem
Focuses on the problematic aspect rather than the intricacy.
A vexing matter
Highlights the irritating or frustrating nature of the question.
A baffling question
Highlights the confusing or incomprehensible nature of the question.
A challenging dilemma
Emphasizes the difficulty in finding a satisfactory solution.
A perplexing puzzle
Uses a metaphor to describe the question as something confusing and hard to solve.
FAQs
How can I use "a knotty question" in a sentence?
You can use "a knotty question" to introduce a complex problem or issue that requires careful consideration. For example, "The ethics of artificial intelligence presents "a knotty question" for policymakers."
What are some synonyms for "a knotty question"?
Alternatives to "a knotty question" include "a complex issue", "a difficult problem", or "a challenging dilemma". The best choice depends on the specific context.
Is it appropriate to use "a knotty question" in formal writing?
Yes, "a knotty question" is suitable for formal writing. As Ludwig AI explains, it appears frequently in news media and scientific contexts.
What makes a question "knotty"?
A "knotty" question implies that the issue is intricate, complicated, and difficult to resolve. It suggests that there are many interconnected factors that make finding a solution challenging.
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
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested