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 command of knowledge
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "a command of knowledge" is correct and usable in written English.
It can be used to describe someone who has a strong understanding or mastery of a particular subject or area of knowledge. Example: "Her command of knowledge in the field of neuroscience makes her an invaluable asset to the research team."
✓ Grammatically correct
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified similar examples from authoritative sources
Similar Expressions
59 human-written examples
Despite having low keyboarding skills in English, they also have a fair command of knowledge and practice of general Web 2.0 tools for daily life, but not for educational purposes.
Third, culture and the writing system are inseparably linked to statecraft in that a command of writing and knowledge of the written tradition were for millennia necessary and requisite skills for holding office.
Encyclopedias
A command of such basic knowledge was necessary before developing and debating other ideas, he said.
News & Media
The project, he said, required a command of two different spheres of knowledge: the biology of the skin, and the engineering of polymers.
News & Media
There is a consciousness of sculptural sensibilities, too, in very successful works by Patricia Madeja, Linda Pino and Robin Schechtel that blend a command of abstract composition with a knowledge of the expressive possibilities of precious stones and metals.
News & Media
A command of standard Chinese is essential.
News & Media
Mr. Romney demonstrated a presidential command of the knowledge, concern and solutions needed, while President Obama poses the threat of American military and economic weakness.
News & Media
We offer young people so-called 'transferable' skills and then discover they need to be in command of a body of knowledge before they can be either critical or creative".
News & Media
Board certification can be a reliable indicator of proficiency if the certifying organization demonstrates, through regularly scheduled independent review, that its processes meet established standards and when a certificate holder is required to periodically demonstrate command of a body of knowledge that is essential to current professional practice.
Tensions between the different prevailing discourses challenged the new parents and deciding on health promoting practices involved negotiating between different discourses, and could involve a choice between trusting the experience of the informal supporters or the command of medical knowledge among health workers.
Science
"He's not always looking at notes or historical records but has an easy command of first-hand knowledge.
News & Media
Expert writing Tips
Best practice
Use "a command of knowledge" when you want to emphasize someone's ability to effectively utilize and apply their knowledge in a specific context. For instance, "Her "a command of knowledge" in data science allowed her to solve complex problems efficiently."
Common error
Avoid using "a command of knowledge" when you actually mean the process of learning or gaining knowledge. "Acquisition of knowledge" is more appropriate when referring to the act of learning itself, whereas "a command of knowledge" refers to the skillful use of what's already learned.
Source & Trust
60%
Authority and reliability
3.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a command of knowledge" functions as a noun phrase, typically used as the object of a verb or the complement of a preposition. It describes the extent of someone's ability to apply knowledge effectively. Based on Ludwig AI's response, the phrase is grammatically sound.
Frequent in
Science
0%
News & Media
0%
Formal & Business
0%
Less common in
Science
0%
News & Media
0%
Formal & Business
0%
Ludwig's WRAP-UP
In summary, the phrase "a command of knowledge" is a grammatically correct noun phrase used to describe someone's expertise and ability to effectively use their understanding in a particular field. As Ludwig AI confirms, it is usable in written English to emphasize proficiency. While real-world examples are limited in the provided search data, the phrase is more common in formal and professional contexts like academia, business, and news reporting. Alternatives such as "a mastery of knowledge" or "a grasp of knowledge" can be used depending on the specific nuance you want to convey. When using this phrase, ensure you are referring to the application of knowledge, not the acquisition of it.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
a mastery of knowledge
Replaces "command" with "mastery", emphasizing a high level of proficiency.
a grasp of knowledge
Substitutes "command" with "grasp", indicating a firm understanding.
an understanding of knowledge
Uses "understanding" instead of "command", focusing on comprehension.
a proficiency in knowledge
Replaces "command" with "proficiency", highlighting skill and competence.
a deep understanding
Emphasizes the depth of understanding rather than the ability to command.
extensive knowledge
Focuses on the breadth of knowledge possessed.
comprehensive knowledge
Highlights the thoroughness and completeness of the knowledge.
expert knowledge
Indicates a high level of specialized knowledge.
authoritative knowledge
Stresses the reliability and accuracy of the knowledge.
substantial knowledge
Indicates a significant amount of knowledge.
FAQs
How can I use "a command of knowledge" in a sentence?
You can use "a command of knowledge" to describe someone's ability to effectively use their understanding of a subject. For example, "His "a command of knowledge" in mathematics was evident in his problem-solving skills."
What can I say instead of "a command of knowledge"?
You can use alternatives like "a mastery of knowledge", "a grasp of knowledge", or "a deep understanding" depending on the context.
Which is correct, "a command of knowledge" or "command on knowledge"?
"A command of knowledge" is the correct phrasing. "Command on knowledge" is not idiomatic and doesn't convey the intended meaning of having expertise in a subject.
What's the difference between "a command of knowledge" and "knowledge management"?
"A command of knowledge" refers to an individual's proficiency and expertise, whereas "knowledge management" refers to the processes and systems used to capture, store, and share knowledge within an organization.
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
60%
Authority and reliability
3.8/5
Expert rating
Real-world application tested