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
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "a vast" is correct and usable in written English.
You can use the word "vast" to mean "enormous" or "very great." For example, you could say "The sky was vast and dark."
✓ Grammatically correct
News & Media
Science
Encyclopedias
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
58 human-written examples
"A vast wasteland"!
News & Media
It's also a vast responsibility.
News & Media
It is a vast organisation.
News & Media
That is a vast question.
News & Media
It's a vast, fertile field.
News & Media
So it's a vast improvement".
News & Media
A vast amount is wasted.
News & Media
It's a vast area, though.
News & Media
TAKE a vast windowless hall.
News & Media
This is a vast shift in taste.
News & Media
Were slaves actually planning a vast insurrection?
News & Media
Expert writing Tips
Best practice
Use "a vast" to emphasize the immense scale or scope of something, creating a sense of awe or overwhelming size. For instance, "The desert stretched out as a vast expanse of sand."
Common error
Avoid using "a vast" in casual conversation where a simpler adjective like "big" or "large" would suffice. Overusing it can sound overly formal or even pompous. Instead, reserve "a vast" for situations where you genuinely want to convey a sense of immensity or grandeur.
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a vast" primarily functions as an adjective phrase modifying a noun. It serves to emphasize the scale, scope, or extent of the noun it describes. Ludwig AI confirms its correct and widespread usage across diverse contexts.
Frequent in
News & Media
72%
Science
15%
Encyclopedias
5%
Less common in
Formal & Business
2%
Reference
1%
Social Media
1%
Ludwig's WRAP-UP
In summary, the phrase "a vast" is a grammatically correct and frequently used adjective phrase that emphasizes the immense scale, scope, or extent of something. Ludwig AI confirms this with numerous examples from authoritative sources. It's most common in news and media, scientific writing, and encyclopedic content, and its register leans towards neutral and formal. When writing, use "a vast" to convey a sense of immensity, but avoid overusing it in casual contexts where simpler adjectives might be more appropriate. Consider alternatives like "a large", "an extensive", or "a significant" depending on the specific nuance you want to convey.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
an extensive
Focuses on the reach or scope of something, rather than just its size.
a large
Focuses on size, similar to "a vast" but can sometimes imply less of an overwhelming scale.
a tremendous
Highlights the great magnitude or intensity of something.
a gigantic
Implies an extremely large size, often used for emphasis.
a significant
Emphasizes importance or consequence rather than sheer size.
a substantial
Indicates that something is of considerable size, quantity, or importance.
a considerable
Suggests something is noteworthy in size, amount, or extent.
a great
A more general term for something large or significant, less emphatic than "a vast".
a comprehensive
Emphasizes completeness and breadth, rather than just size.
a wide
Focuses on the breadth or scope of something, often used for variety or options.
FAQs
How can I use "a vast" in a sentence?
You can use "a vast" to describe something of immense size, scope, or quantity. For example, "The internet provides "a vast amount of information" on nearly every topic imaginable."
What are some alternatives to "a vast"?
Depending on the context, you could use phrases like "a large", "a significant", "an extensive", or "a tremendous" to convey a similar meaning.
Is it always appropriate to use "a vast" in writing?
While grammatically correct, "a vast" is best suited for formal writing or when you specifically want to emphasize the immensity or grandeur of something. In casual conversation, simpler alternatives might be more appropriate.
What's the difference between "a vast" and "a huge"?
Both phrases indicate something large, but "a vast" often implies a sense of expanse, scope, or complexity, whereas "a huge" primarily emphasizes size. For example, you might say "a vast territory" to suggest a large and complex area, but "a huge building" to simply describe its physical size.
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
4.5/5
Expert rating
Real-world application tested