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Prepositions with nouns

“Of role” or “in role”?

Use in a role to describe someone's position or function. Of role is uncommon alone and usually appears in formal phrases such as the role of technology.

Quick answer

Which preposition is used with role?

Use in a role for acting, jobs, or functions: she appeared in the role of Juliet. Use role in something for involvement: the role of sleep in learning. Of role alone is not a common pattern.

He starred in the role of Hamlet.
Researchers studied the role of diet in heart health.
She succeeded in her role as manager.

Choose the pattern by meaning

These forms are not interchangeable. Choose the construction by meaning, not by which preposition appears most often.

1
in + role

Performing or serving in a position

Use in a role for someone's function, job, or acting part.

She excelled in her role as team leader.
The actor appeared in the role of a detective.
2
role of + noun

Function or importance

Use role of to describe what something does or how it is involved.

The report explains the role of education in society.
They discussed the role of technology in healthcare.
3
role in + noun

Participation in an activity or process

Use role in to show involvement in something.

She played a major role in the negotiations.
Exercise has an important role in recovery.

See the difference in context

The same subject can take different constructions because each sentence answers a different question.

Construction
Example
Meaning
in a role
He works in a leadership role.
serving in a position
the role of
We examined the role of memory.
function or purpose
role in
She had a key role in the project.
involvement in something
of role
The phrase of role alone is not standard modern usage.
normally part of a larger structure

Common mistakes

Some combinations appear in real text but do not mean what learners often assume.

Using of role by itself

English usually uses role of or in a role instead.

✕ She succeeded of role manager. ✓ She succeeded in her role as manager.

Confusing role of and role in

Role of names the function; role in names the activity or process.

✕ The role in sleep is important. ✓ The role of sleep is important.

Quick practice

Choose the expression that matches the intended meaning.

1. She performed brilliantly ___ the role of Cleopatra.
2. The study examined the role ___ exercise.
3. He had an important role ___ the campaign.

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Frequently asked questions

Can I say in role without an article?

Usually English uses an article or possessive, such as in a role or in her role.

What is the difference between role of and role in?

Role of identifies the function itself. Role in identifies participation in a situation or process.

Is of role correct English?

Not usually as a standalone phrase. It normally appears inside larger structures.

of, about, against, to or for racism? of, about, for, in or on friendship? of, about, for, on or to thing? of, about, for, to or with sex? of, about, on, to or for moon? "of access" or "with access"? "of accommodation" or "for accommodation"? "of accuracy" or "for accuracy"? "of action" or "in action"? "of actor", "with actor" or "by actor"? "of address" or "to address"? "of administration" or "in administration"?

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