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
comprised mostly of
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase 'comprised mostly of' is correct and can be used in written English.
It is used to describe something composed of mostly one element, with some smaller amounts of other elements. For example: "The population of the city is comprised mostly of young professionals."
✓ Grammatically correct
News & Media
Science
Wiki
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
It is comprised mostly of local stations.
News & Media
"It's comprised mostly of new taxes on the insurance industry".
News & Media
The crowd — which, according to the camera pans, was comprised mostly of very beautiful women — went completely bonkers.
News & Media
The union's peacekeeping force of more than 5,000 is comprised mostly of soldiers from Uganda and Burundi.
News & Media
They're small units that are comprised mostly of military people, although they do have civilian members, too.
News & Media
One court over, however, was the scene of a roiling game of full court, comprised mostly of kids.
News & Media
His squad, comprised mostly of players from the region, shoots very well for the low-major Northeast Conference.
News & Media
On the pitch, the seleçao – comprised mostly of players from poor communities – has won more World Cups than any other.
News & Media
The menu follows suit, and is comprised mostly of no-fuss classics like fried oysters, skate wing, and steamers.
News & Media
Years ago, before we were married, my husband Andrew ran a reading group - it was comprised mostly of young progressive-minded men in their 20s.
News & Media
"Social networks are very much like real-world communities that are comprised mostly of good people who are there for the right reasons".
News & Media
Expert writing Tips
Best practice
When using "comprised mostly of", ensure that the other components are not entirely negligible. If the subject is almost entirely one thing, consider using "comprised entirely of" or "primarily comprised of" instead.
Common error
Avoid using "comprised of" when you mean "composed of". Although often used interchangeably, "comprise" means 'to include' or 'contain', while "compose" means 'to constitute' or 'to make up'. It is more technically correct to say something is "composed mostly of" something else.
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
"Comprised mostly of" functions as a prepositional phrase indicating the primary constituents of a subject. It modifies a noun or noun phrase by specifying its composition. As noted by Ludwig AI, this phrase is common and grammatically sound.
Frequent in
News & Media
42%
Science
39%
Wiki
5%
Less common in
Formal & Business
1%
Encyclopedias
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, "comprised mostly of" is a grammatically correct and versatile phrase used to describe the composition of something, emphasizing its dominant element. Ludwig AI confirms its accuracy and widespread use. It appears most frequently in News & Media and Science contexts, with a neutral to formal register. When employing this phrase, ensure that the remaining components are noteworthy and consider using alternatives like "primarily composed of" for a stronger emphasis or "largely constituted by" to focus on the structural aspect. Remember to distinguish "comprised of" from "composed of" for greater precision, and avoid overuse by varying your descriptive language.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
primarily composed of
Emphasizes the main component while suggesting other minor elements are present.
largely constituted by
Focuses on the composition, highlighting the dominant element.
mainly consisting of
Highlights the major components that make up the whole.
predominantly formed of
Stresses the formation process, emphasizing the most significant element.
chiefly made up of
Indicates the principal element within a composition.
mostly filled with
Suggests a volume or space is occupied by the specified element.
generally composed of
Indicates a prevalent but not necessarily exclusive composition.
substantially consisting of
Emphasizes the considerable amount of the specified component.
heavily weighted with
Indicates that the subject contains a large percentage of certain elements.
markedly characterized by
Points out that a feature is significant in defining something, but not all elements within are of that kind.
FAQs
How can I use "comprised mostly of" in a sentence?
Use "comprised mostly of" to indicate that something consists mainly of a specific element, with other elements present in smaller quantities. For example, "The team is comprised mostly of volunteers".
What's a good alternative to "comprised mostly of"?
Alternatives include "mainly consisting of", "primarily composed of", or "largely constituted by", depending on the specific nuance you want to convey.
Is it better to say "comprised of" or "composed of"?
"Composed of" is generally considered more precise because "comprise" means to include all parts, whereas "composed of" means to be made up of parts. To be completely correct, use "composed of" or rephrase to use "comprises" correctly (e.g., "The team comprises mostly volunteers.").
What's the difference between "comprised mostly of" and "entirely comprised of"?
"Comprised mostly of" indicates that a majority of something is made up of a particular element, with other elements present. In contrast, "entirely comprised of" indicates that something is exclusively made up of a single element, with no other components.
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
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested