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
is mainly used
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "is mainly used" is correct and usable in written English.
You can use it when you are describing the primary purpose or most common use for something. For example, "The word 'alacrity' is mainly used to mean enthusiastic willingness."
✓ Grammatically correct
Science
News & Media
Academia
Alternative expressions(20)
is primarily employed
is chiefly utilized
serves predominantly as
is primarily for
is typically used
is largely applied
is essentially for
is substantially dedicated to
is essentially used
is largely used
is chiefly used
is principally used
is predominantly used
is particularly used
is basically used
are mostly used
is used primarily
is primarily used
are largely used
is mostly used
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
Survival analysis is mainly used for calculations.
Academia
Thermal coal is mainly used in power generation.
News & Media
It is mainly used in microwave frequencies.
Ultrasound is mainly used in prostate positioning.
Science
Tall oil is mainly used in liquid soap.
Encyclopedias
But here, weed is mainly used as a gateway drug for getting into people's minds.
News & Media
It released research this week showing that "lol" is mainly used by old people these days.
News & Media
Internet radio, by contrast, is mainly used by people at the office.
News & Media
True, right now the app is mainly used by educators tracking data.
Academia
Snus is a smokeless tobacco that is mainly used in Scandinavia.
Academia
The first approach is mainly used in ultrafiltration processes.
Science
Expert writing Tips
Best practice
When describing the primary function of a tool, system, or concept, use "is mainly used" to clearly communicate its most common application. This helps avoid ambiguity and ensures clarity.
Common error
Avoid repetitive use of "is mainly used" in technical documents; vary your language by incorporating synonyms such as "primarily employed" or "chiefly utilized" to maintain reader engagement and demonstrate a broader vocabulary.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "is mainly used" functions as a stative verb phrase. It describes the principal purpose or application of a subject. Ludwig AI confirms its proper grammatical structure and usability. The phrase appears frequently in various contexts.
Frequent in
Science
44%
News & Media
38%
Academia
12%
Less common in
Encyclopedias
3%
Wiki
3%
Formal & Business
0%
Ludwig's WRAP-UP
The phrase "is mainly used" serves as a straightforward and commonly employed means of indicating the principal application or purpose of a given subject. Ludwig AI validates its grammatical soundness and widespread acceptance. As evidenced by the numerous examples culled from sources spanning science, news media, and academia, this phrase effectively conveys the primary function across diverse contexts. To enhance writing and preclude repetition, consider varied alternatives such as "is primarily employed" or "chiefly utilized".
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
is primarily employed
Replaces "mainly used" with "primarily employed", focusing on the action of using something but adds a slightly more formal tone.
is chiefly utilized
Substitutes "mainly used" with "chiefly utilized", implying that something is used to a principal extent.
is largely applied
Changes "mainly used" to "largely applied", which emphasizes the application aspect more than the usage itself.
is essentially for
Replaces "is mainly used" to "is essentially for", which focuses on the core purpose.
serves predominantly as
Changes to "serves predominantly as", altering the structure and highlighting the serving function in a leading capacity.
functions primarily as
Uses "functions primarily as" instead of "is mainly used", emphasizing the functional aspect and its main role.
is generally intended for
Expresses the general intention rather than the actual usage, shifting the focus from what it's used for to what it's designed for.
is commonly designated for
Shifts from primary usage to common designation, which relates more to what something is officially or typically meant for.
is typically devoted to
Implies that something is typically devoted to specific purposes, thus stressing the idea of allocation or dedication to specific task.
is substantially dedicated to
Indicates that a significant portion or effort is dedicated to something, implying importance in application.
FAQs
How can I rephrase "is mainly used" to sound more formal?
For a more formal tone, consider alternatives such as "is primarily employed", "is chiefly utilized", or "serves predominantly as" depending on the context.
What's the difference between "is mainly used" and "is often used"?
"Is mainly used" suggests the most common or primary application, whereas "is often used" implies frequent but not necessarily primary use. The former indicates a principal purpose, while the latter indicates a high frequency of usage among other possible uses.
Is it correct to say "is mainly use" instead of "is mainly used"?
No, "is mainly use" is grammatically incorrect. The correct form is "is mainly used", where "used" is the past participle of the verb "use" and functions as an adjective describing how something is utilized.
What are some common mistakes people make when using "is mainly used"?
A common mistake is overusing the phrase in close proximity within a text, leading to redundancy. To avoid this, vary your language with synonyms like "is primarily for", "is typically used", or "is generally intended for".
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
4.5/5
Expert rating
Real-world application tested