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
they were vast
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "they were vast" is correct and usable in written English.
It can be used to describe something that is extensive or large in size, quantity, or scope. Example: "The oceans are vast, covering more than 70% of the Earth's surface."
✓ Grammatically correct
News & Media
Arts
Tech
Science
Travel
Alternative expressions(20)
they were hefty
they were mammoth
they were huge
they were substantial
they were tremendous
they were gigantic
they were large
they were dramatic
they were phenomenal
they were big
they were monumental
they were remarkable
they were enormous
they were significant contributors to growth in past decades
they were great
they were immense
they were colossal
they were significant
they were huge steaks
they were massive
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
3 human-written examples
They were vast, vaguely biomorphic cities with spheres and towers built on the ocean or asteroids.
News & Media
They were vast, wobbly things with bacon, onions, cheese, potatoes and tomatoes, said Maureen Ragaglia, his mother.
News & Media
He stepped in off the High Street and there they were: vast paintings, some almost 100ft square, hanging so dense and close they filled the cavernous space with their mysterious radiance.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
56 human-written examples
At once they're vast and also slippery.
News & Media
They're vast paintings, which translate the original snaps into pieces more than two-metres high.
News & Media
Ico, Shadow and Last Guardian all share a similar aesthetic – they are vast, lonely worlds, bathed in almost blinding sunlight.
News & Media
They are vast, nature-based water utilities assisting in the storage and release of freshwater to lakes and river networks.
News & Media
They must have been stunning when they were all white, but even now, stripped down to their heavy brown stone, they are vast and austere.
News & Media
Rather, they are vast and systemic: the limited availability of subsidized care for preschool children, the resistance of corporate culture to flexible or reduced hours for the parents of young children, the lack of federally mandated, paid family leave.
News & Media
And Jeff Morgan, of the California-based Global Heritage Fund which provides intensive, long-term help at a limited number of sites says UNESCO lacks the resources to monitor its ever-growing list of places, especially if they are vast bits of wilderness.
News & Media
"They are vast stretches of corn under troubled skies," he wrote to Theo some weeks before his death, "and I did not have to go out of my way very much in order to try to express sadness, extreme loneliness".
News & Media
Expert writing Tips
Best practice
Use "they were vast" to describe landscapes, collections, or abstract concepts when you want to emphasize their immense size or scope. For example, "They were vast fields of wheat swaying in the wind."
Common error
Avoid using "they were vast" in overly simplistic sentences where a more descriptive adjective would be more impactful. For instance, instead of "They were vast buildings", consider "They were towering skyscrapers".
Source & Trust
94%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "they were vast" functions as a descriptive phrase, attributing the quality of being "vast" to a subject. This phrase is typically used to emphasize the size, scope, or extent of something, as demonstrated in the examples provided by Ludwig.
Frequent in
News & Media
50%
Arts
17%
Science
17%
Less common in
Tech
16%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, the phrase "they were vast" is a grammatically correct and usable expression to describe something large in size, scope, or extent. Ludwig AI confirms its correctness. While it's a relatively rare phrase, it appears in diverse contexts like news, arts, and science. If you want to be more precise and have variety, consider using alternatives like "they were immense" or "they were extensive". Remember to avoid using it in overly simple sentences for maximum impact.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
they were immense
Replaces "vast" with a synonym emphasizing great size or scale.
they were enormous
Substitutes "vast" with another synonym that highlights exceptional size.
they were expansive
Uses "expansive" instead of "vast", focusing on the wide-ranging nature of something.
they were extensive
Employs "extensive" to suggest a great range or scope rather than just size.
their scale was considerable
Rephrases to emphasize the substantial scale of something, using a more formal tone.
they covered a large area
Focuses on the spatial coverage, replacing "vast" with a descriptive phrase.
they stretched far and wide
Uses a more descriptive and evocative expression to convey the idea of vastness.
they occupied a huge space
Highlights the amount of space something takes up, offering a more concrete image.
they were of great magnitude
Adopts a more formal and abstract tone, focusing on the significance of the size.
they were remarkably large
Emphasizes the notable size using "remarkably large" instead of "vast".
FAQs
How can I use "they were vast" in a sentence?
Use "they were vast" to describe something large in size, scope, or quantity. For instance, "The plains were vast, stretching as far as the eye could see."
What are some alternatives to "they were vast"?
You can use alternatives such as "they were immense", "they were enormous", or "they were extensive" depending on the context.
Is "they were vast" a formal or informal expression?
"They were vast" is suitable for both formal and informal contexts. However, in more formal writing, consider using synonyms like "immense" or "extensive" for added precision.
What's the difference between "they were vast" and "they were huge"?
While both convey large size, "they were vast" often implies a sense of scale or expanse, whereas "they were huge" simply indicates great size. For example, you might say, "They were vast territories", but "They were huge boulders".
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
94%
Authority and reliability
4.5/5
Expert rating
Real-world application tested