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
various open questions
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "various open questions" is correct and usable in written English.
It can be used when discussing topics that have multiple unresolved issues or inquiries that require further exploration or clarification. Example: "In our research, we identified various open questions that need to be addressed in future studies."
✓ Grammatically correct
Science
News & Media
Alternative expressions(1)
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
7 human-written examples
However, there are still various open questions that need to be answered in order to optimize training strategies.
Science
The chapter highlights various open questions relating to issues that need to be addressed in future research.
Despite various open questions, the study comprises a promising step for the empirical investigation of existing construction yards in cognitive load research.
Science
The starting points of the investigation are the settings of graph games and of marginal contribution nets, where the worth of any coalition can be computed in polynomial time in the size of the game encoding and for which various open questions were stated in the literature.
Science
The widespread use of social networking, web, and cloud computing is encouraging researchers to look at various open questions, and a lot more work need to be done before it becomes a reality and widely accepted by the user community.
But despite an increasing body of knowledge about the application of sequential and simultaneous PET/MR in oncology various open questions still exist concerning the scientific and medical prospects and limitations.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
53 human-written examples
There are several open questions.
News & Media
Also in light of these various limitations and open questions, evaluating science-policy interfaces, including large-scale assessments, in a rigorous, consistent and collaborative manner is absolutely crucial to improve processes of evidence-informed policy making.
Science & Research
Future directions in various areas together with some open questions are also outlined.
An author may choose to incorporate various types of interactions including open questions as well as questions dealing with single or multiple selections.
Science
These observations lead to a unified treatment of various reducing subspaces; moreover, they also settle some open questions and suggest new decompositions.
Expert writing Tips
Best practice
When using "various open questions", ensure that the context clearly indicates the specific field or topic to which these questions pertain for clarity.
Common error
Avoid using "various open questions" without providing any context or indication of the subject matter. Be specific about the area where these questions arise.
Source & Trust
82%
Authority and reliability
4.3/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "various open questions" functions as a noun phrase, typically serving as the subject or object of a sentence. It identifies the existence of multiple unresolved issues. Ludwig AI confirms its correctness and usability.
Frequent in
Science
50%
News & Media
28%
Formal & Business
22%
Less common in
Ludwig's WRAP-UP
In summary, the phrase "various open questions" is a grammatically sound and commonly used expression to denote multiple unresolved inquiries. As Ludwig AI confirms, it's suitable for formal contexts, particularly in science and research. When using this phrase, ensure clarity by specifying the subject area to which these questions belong. Alternatives like "several unanswered questions" or "numerous unresolved issues" can be used to convey similar meanings, depending on the specific nuance you wish to emphasize. Ludwig's examples highlight the phrase's use in academic, news, and business settings, demonstrating its versatility and broad applicability.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
several unanswered questions
Replaces "various" with "several" and "open" with "unanswered", emphasizing the lack of resolution.
multiple unresolved questions
Replaces "various" with "multiple" and "open" with "unresolved", emphasizing the presence of several questions that are not yet settled.
several remaining questions
Replaces "various" with "several" and uses "remaining" to indicate that the questions are yet to be answered.
numerous unresolved issues
Substitutes "questions" with "issues" and "open" with "unresolved", focusing on problems that haven't been settled.
numerous pending inquiries
Combines "numerous" and "pending" to emphasize the quantity and unresolved state of the inquiries.
many outstanding inquiries
Replaces "questions" with "inquiries" and uses "outstanding" to convey that they are still pending.
many unanswered inquiries
Uses "many" and "unanswered" to focus on the large number of inquiries that lack resolution.
a range of pending questions
Uses "a range of" to replace "various" and "pending" instead of "open", suggesting questions that are waiting to be addressed.
a number of open inquiries
Substitutes "various" with "a number of", indicating a quantifiable amount of open inquiries.
multiple outstanding problems
Substitutes "questions" with "problems" and "open" with "outstanding", highlighting the unresolved nature of multiple issues.
FAQs
How can I use "various open questions" in a sentence?
You can use "various open questions" to refer to unresolved issues or inquiries that need further exploration. For example, "The study identified "various open questions" regarding the long-term effects of the treatment".
What can I say instead of "various open questions"?
You can use alternatives like "several unanswered questions", "numerous unresolved issues", or "many outstanding inquiries" depending on the context.
Which is correct, "various open questions" or "various opened questions"?
"Various open questions" is the correct phrase. "Opened" implies that the questions have been initiated, whereas "open" signifies that they are unresolved.
What's the difference between "various open questions" and "some open questions"?
"Various open questions" implies a wider range or a larger number of unresolved issues compared to "some open questions", which suggests a smaller, less defined set of inquiries.
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
82%
Authority and reliability
4.3/5
Expert rating
Real-world application tested