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Prepositions after adjectives

Excellent for or excellent in?

Excellent for and excellent in are both correct, but they are used in different ways.

Quick answer

When to use excellent for and excellent in

Use excellent for to describe suitability, benefit, or purpose. Use excellent in to describe skill or performance within a subject, activity, or field.

This cream is excellent for dry skin.
She is excellent in mathematics.
The software is excellent for small businesses.

Choose the pattern by meaning

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

1
excellent for + purpose or person

Showing suitability or benefit

Use excellent for when something is very suitable or useful.

These exercises are excellent for beginners.
Olive oil is excellent for cooking.
2
excellent in + subject or field

Describing ability within an area

Use excellent in to describe strong performance in a subject, activity, or profession.

He is excellent in science.
The team performed excellent in defence during the match.
3
excellent at + activity

Talking about skill in an activity

Excellent at is often more natural than excellent in for practical skills and activities.

She is excellent at chess.
They are excellent at problem-solving.

See the difference in context

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

Construction
Example
Meaning
excellent for
This tool is excellent for home repairs.
Suitable or beneficial for a purpose.
excellent in
She is excellent in chemistry.
Very skilled within a subject or field.
excellent at
He is excellent at negotiation.
Very skilled at an activity or task.
excellent with
She is excellent with children.
Very good when dealing with people or things.

Common mistakes

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

Using excellent in for general suitability

Use excellent for when discussing purpose or usefulness.

✕ This app is excellent in travel planning. ✓ This app is excellent for travel planning.

Using excellent for with school subjects

Use excellent in or excellent at for academic ability.

✕ She is excellent for physics. ✓ She is excellent in physics.

Quick practice

Choose the expression that matches the intended meaning.

1. This guide is excellent ___ new teachers.
2. He is excellent ___ mathematics.
3. She is excellent ___ dealing with customers.

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Frequently asked questions

Can excellent be followed by both for and in?

Yes. Excellent for expresses suitability, while excellent in expresses ability within a field.

Is excellent at more common than excellent in?

Excellent at is especially common for activities and skills. Excellent in is often used for subjects or areas.

Can I say excellent with people?

Yes. Excellent with someone means very skilled in dealing with them.

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