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
their role is
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "their role is" is correct and usable in written English.
You can use it to describe the function or responsibility of a person or group in a specific context. Example: "In this project, their role is to oversee the implementation of new strategies."
✓ Grammatically correct
News & Media
Science
Encyclopedias
Alternative expressions(2)
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
Their role is passive.
Encyclopedias
Their role is twofold.
News & Media
Their role is insignificant".
News & Media
But their role is important.
News & Media
That's what they think their role is?
News & Media
Their role is to provide comic relief.
News & Media
Their role is to give me protection and encouragement.
News & Media
"Their role is to pursue pathways to work..
News & Media
met in Seattle in 1999, but their role is marginal.
News & Media
Their role is again being recognised within the development community.
News & Media
"Everybody knows what their role is," she said.
News & Media
Expert writing Tips
Best practice
When using the phrase, follow it with a specific and measurable action or outcome. For example, "Their role is to increase customer satisfaction by 15% in the next quarter."
Common error
Avoid using overly broad or ambiguous descriptions after "their role is". Instead of saying "Their role is to manage the project", specify what aspects of the project they are managing and what specific tasks they are responsible for.
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "their role is" functions as a subject complement, linking the subject (a group of people or entities) to a description of their function or responsibility. Ludwig AI confirms its correctness and usability, exemplified by numerous real-world sentences.
Frequent in
News & Media
61%
Science
25%
Formal & Business
5%
Less common in
Encyclopedias
2%
Reference
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, "their role is" is a grammatically sound and commonly used phrase, as confirmed by Ludwig AI. Its primary function is to clearly define the responsibilities or functions of a group or individual. The phrase is versatile, appearing in news, scientific publications, and general communication. While it maintains a neutral register, clarity and specificity are crucial when describing the role to avoid ambiguity. Remember to use this phrase followed by a well-defined task or outcome to increase clarity.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
their function is
Replaces "role" with "function", emphasizing the practical purpose or activity.
their responsibility is
Substitutes "role" with "responsibility", highlighting the accountability and duties involved.
their duty is
Replaces "role" with "duty", stressing the moral or legal obligation involved.
they are tasked with
Focuses on the assignment of specific duties, shifting from a general role to specific tasks.
it is their responsibility to
Rephrases the sentence structure to emphasize the allocation of responsibilities.
they are in charge of
Emphasizes authority and control over a particular area or activity.
their job is
Substitutes "role" with "job", making it more informal and focusing on the specific work.
they are expected to
Highlights the expected actions or behaviors, focusing on anticipation and norms.
they have a mandate to
Emphasizes the formal authorization or instruction given to carry out a specific role or task.
they are designated to
Focuses on the formal selection or appointment for a specific purpose or role.
FAQs
How can I use "their role is" in a sentence?
Use "their role is" to clearly define the function or responsibility of a group or individuals in a specific context. For example, "In this project, "their role is" to oversee the implementation of new strategies."
What are some alternatives to "their role is"?
You can use alternatives like "they are responsible for" or "their function is" depending on the context.
How does "their role is" differ from "they are responsible for"?
"Their role is" generally describes the overall function or position, while "they are responsible for" typically refers to specific duties or tasks. The first is more about position, the latter about duties.
Is it correct to use "their role are" instead of "their role is"?
No, "their role are" is grammatically incorrect. "Role" is singular, so it should be paired with the singular verb "is". The correct phrase is ""their role is"".
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