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 vast knowledge
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "a vast knowledge" is correct and usable in written English.
It can be used to describe someone who has extensive information or understanding about a particular subject or a wide range of topics. Example: "Her vast knowledge of history made her an excellent candidate for the teaching position."
✓ Grammatically correct
News & Media
Encyclopedias
Science
Wiki
Alternative expressions(20)
extensive knowledge
profound knowledge
comprehensive understanding
profound insight
considerable expertise
immense learning
broad expertise
encyclopedic knowledge
deep understanding
substantial knowledge base
wide-ranging knowledge
a huge knowledge
a tremendous knowledge
a substantial knowledge
a great knowledge
a widespread knowledge
a wide knowledge
a significant knowledge
a massive knowledge
a broad knowledge
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
57 human-written examples
He had a vast knowledge of Russian theatre.
News & Media
"He has a vast knowledge base and experience.
News & Media
Amy said the spelling challenge raised her self-esteem and gave her "a vast knowledge of words".
News & Media
He had a vast knowledge of theater, music and art, great curiosity and a high energy level.
News & Media
He had a vast knowledge of art and architectural history, literature, and the best restaurants and bars in every major city across the globe.
News & Media
They don't just have a vast knowledge and extraordinary computational abilities, but they exhibit emotional intelligence and remain subservient to their human masters.
News & Media
Holmes, in this interpretation, is an intellectual with a vast knowledge of arcane matters, but he's also a brawler and a prankster, and he's formidably street-smart.
News & Media
He enlarged and printed snapshots from people's family albums, which, as he has pointed out, gave him a vast knowledge of Soviet amateur photography.
News & Media
"Joyce has a vast knowledge of colleges and the advantage of a small counseling load," said Bill Fitzsimmons, dean of admissions at Harvard.
News & Media
Relentlessly subversive, accessible without being gratuitous, densely paranoid and paranoidally dense, the humor is rooted in a vast knowledge of history, art, literature, science and law.
News & Media
"Gary Barnett comes to the C.F.T.C. with a vast knowledge of the swaps market," Gary Gensler, the agency's chairman, said in a statement.
News & Media
Expert writing Tips
Best practice
When describing someone's expertise, specify the area where they possess "a vast knowledge" to provide clarity and context. For example, "He has a vast knowledge of ancient history."
Common error
Avoid repeatedly using "a vast knowledge" in your writing. Opt for synonyms like "extensive understanding" or "considerable expertise" to maintain reader engagement and sentence variety.
Source & Trust
84%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a vast knowledge" functions as a noun phrase, typically serving as the object of a verb or the complement of a preposition. It describes the extent and depth of someone's understanding or familiarity with a subject, as demonstrated in Ludwig's examples.
Frequent in
News & Media
52%
Encyclopedias
14%
Science
12%
Less common in
Wiki
11%
Formal & Business
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "a vast knowledge" is a grammatically sound and frequently used noun phrase that indicates a comprehensive understanding of a subject. As confirmed by Ludwig AI, its primary function is to emphasize the breadth and depth of someone's expertise. While suitable for various contexts, it frequently appears in news, encyclopedias, and scientific sources. To enhance clarity and avoid redundancy, consider using synonyms like "extensive knowledge" or "profound insight". By specifying the area of expertise and diversifying your vocabulary, you can effectively convey the scope of someone's understanding.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
extensive knowledge
Focuses on the breadth and depth of understanding.
comprehensive understanding
Highlights the thoroughness of comprehension.
profound insight
Emphasizes deep and perceptive understanding.
considerable expertise
Stresses the skill and experience acquired.
immense learning
Highlights the amount of knowledge acquired through study.
broad expertise
Stresses the wide range of skills and knowledge.
encyclopedic knowledge
Implies knowledge covering a wide range of subjects.
deep understanding
Focuses on the thoroughness of comprehension.
substantial knowledge base
Highlights the foundation of extensive information.
wide-ranging knowledge
Indicates knowledge covering many different areas.
FAQs
How can I use "a vast knowledge" in a sentence?
You can use "a vast knowledge" to describe someone's comprehensive understanding of a subject. For instance, "She has "a vast knowledge" of marine biology.".
What's a good alternative to "a vast knowledge"?
Alternatives include "extensive knowledge", "comprehensive understanding", or "profound insight", depending on the context.
Is it correct to say "a vast knowledge on" a topic?
While understandable, it's more grammatically sound to say "a vast knowledge of" a topic. For example, "He has "a vast knowledge" of astrophysics" is preferable to "a vast knowledge on astrophysics".
What distinguishes "a vast knowledge" from "expertise"?
"A vast knowledge" implies a broad understanding of information, while "expertise" suggests a high level of skill and practical application of that knowledge. One might have "a vast knowledge" of cooking techniques, but true expertise comes from years of experience and perfecting those techniques.
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
84%
Authority and reliability
4.6/5
Expert rating
Real-world application tested