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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
thousands upon thousands
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "thousands upon thousands" is correct and usable in written English.
It can be used to emphasize a very large number of something, often to convey a sense of abundance or overwhelming quantity. Example: "The festival attracted thousands upon thousands of visitors from all over the country."
✓ Grammatically correct
News & Media
Academia
Alternative expressions(20)
countless
innumerable
myriads of
tens of thousands
a great many
a multitude of
a vast quantity of
masses of
an abundance of
innumerable instances of
a sea of
billions upon billions
miles upon miles
dozens upon dozens
millions upon millions
tens upon tens
million upon million
mile upon mile
thousand upon thousand
hundreds of millions
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
60 human-written examples
A figure that includes thousands upon thousands of tents.
News & Media
There are surely thousands upon thousands still unnamed.
News & Media
The war had already killed thousands upon thousands.
News & Media
Meanwhile, while thousands upon thousands of other helpless animals are slaughtered across the nation.
Academia
There are thousands upon thousands of known "Binary Stars," as they are called.
Academia
past thousands upon thousands of volumes.
Academia
There are thousands upon thousands of such data centers.
News & Media
Not just a few, but thousands upon thousands of them.
News & Media
In addition, thousands upon thousands of workers, residents and farmers were deliberately contaminated — for testing purposes.
Academia
Thousands upon thousands of authors have only published at Amazon.
News & Media
Bankruptcy lawyer Steve Reisman has spent the last decade giving away "thousands upon thousands upon thousands" of $2 bills.
News & Media
Expert writing Tips
Best practice
In formal writing, consider whether a more precise number or a more concise phrase like "countless" would be more appropriate.
Common error
Avoid using "thousands upon thousands" excessively in formal reports or academic papers. It can sometimes sound less professional than providing a specific estimate or using a more neutral term like "numerous" or "many".
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "thousands upon thousands" functions as a quantifier, emphasizing a large, indefinite number. As Ludwig AI underlines, this expression is employed to highlight the abundance or overwhelming quantity of something, without specifying an exact figure.
Frequent in
News & Media
60%
Academia
30%
Science
10%
Less common in
Formal & Business
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
The phrase "thousands upon thousands" serves to highlight a substantial, yet indefinite, quantity, often used to emphasize scale and impact. As Ludwig AI confirms, it's grammatically correct and frequently employed in various writing contexts, particularly in news and media. While common, it's worth noting that in formal settings, a more precise number or a more neutral term like "numerous" may be preferable. When aiming to convey a sense of awe or concern related to a large quantity, "thousands upon thousands" provides an effective means of expression.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
countless numbers of
Directly states that the number is too high to count.
a great many
A simpler way to express a large number.
a multitude of
Emphasizes the great number of items or entities.
a vast quantity of
Focuses on the large amount or volume.
masses of
Indicates a large, undifferentiated quantity.
myriads of
Uses a less common word for a large number, implying countless items.
an abundance of
Stresses the plentiful supply or availability.
innumerable instances of
Highlights the frequency and quantity of occurrences.
a sea of
Metaphorically suggests a large, overwhelming number.
oodles of
An informal way to describe a very large amount.
FAQs
How can I use "thousands upon thousands" in a sentence?
You can use "thousands upon thousands" to emphasize a large quantity, as in "The event attracted "thousands upon thousands" of visitors."
What phrases are similar to "thousands upon thousands"?
Similar phrases include "countless", "innumerable", or "myriads of", all of which convey a large, indefinite number.
Is it better to use a specific number instead of "thousands upon thousands"?
In formal writing or when precision is important, providing a specific number (e.g. "20,000") is often better than using ""thousands upon thousands"", which is less exact.
What's the difference between "thousands upon thousands" and "tens of thousands"?
"Thousands upon thousands" emphasizes the sheer number without being specific, while "tens of thousands" provides a more concrete, though still approximate, quantity.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested