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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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expert in

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "expert in" is correct and usable in written English.
It can be used to describe someone who has a high level of knowledge or skill in a particular area or subject. Example: "She is an expert in environmental science and has published several papers on climate change."

✓ Grammatically correct

News & Media

Science

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

56 human-written examples

"He was an expert in martial arts.

News & Media

The New Yorker

But the expert in question denies this.

News & Media

The Economist

Are you an expert in bees?

News & Media

The New York Times

I'm becoming an expert in poop.

News & Media

Independent

He was an expert in combat".

News & Media

The New Yorker

"I'm an expert in Israeli law.

News & Media

The Economist

You are an expert in Israeli intelligence.

News & Media

The New York Times

Ralph Adams Cram, architect, foremost Gothic expert in country.

News & Media

The New Yorker

Well, an expert in alternative medicine.

News & Media

The Guardian

"I'm not an expert in raising kids.

News & Media

The New York Times
Show more...

Human-verified similar examples from authoritative sources

Similar Expressions

1 human-written examples

Experts in criminal profiling concurred.

News & Media

Independent

Expert writing Tips

Best practice

When describing someone's expertise, be specific about the area of knowledge or skill. Instead of saying "He is an expert", specify "He is an "expert in" data analysis".

Common error

Avoid claiming someone is an "expert in" everything. Focus on their demonstrated skills and knowledge in specific domains.

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

84%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "expert in" functions as a descriptive phrase, specifically an adjectival phrase followed by a preposition. It modifies a noun (often a person) by indicating their proficiency or specialized knowledge within a particular field, as seen in Ludwig examples like "He was an expert in martial arts" or "She is an expert in Software Testing". Ludwig AI confirms its grammatical correctness.

Expression frequency: Very common

Frequent in

News & Media

45%

Science

35%

Formal & Business

10%

Less common in

Wiki

7%

Reference

2%

Encyclopedias

1%

Ludwig's WRAP-UP

The phrase "expert in" is a common and grammatically correct way to describe someone with a high level of skill or knowledge in a specific field. Ludwig AI confirms its validity. As shown by the examples in Ludwig, it is frequently used in news, scientific, and business contexts to highlight proficiency and credibility. While versatile, it's best to be specific about the area of expertise and avoid overgeneralizations. Consider using alternatives like "proficient in", "skilled in", or "specialist in" for nuanced meanings. The phrase maintains a neutral to professional register, making it suitable for a wide range of writing styles.

FAQs

How can I use "expert in" in a sentence?

Use "expert in" to describe someone with a high level of knowledge or skill in a specific area. For example, "She is an "expert in" /s/renewable+energy and has advised governments on sustainable policies".

What are some alternatives to "expert in"?

You can use alternatives like "proficient in", "skilled in", or "knowledgeable about" depending on the context.

Is it correct to say "expert on" instead of "expert in"?

While both "expert in" and "expert on" are acceptable, "expert in" typically refers to a specific skill or field, whereas "expert on" refers to a broader topic or subject. Choose the preposition that best fits the intended meaning.

What's the difference between "specialist in" and "expert in"?

"Specialist in" suggests a focused area of expertise, often within a larger field. "Expert in" can imply a broader range of knowledge and experience but does not necessarily mean narrow focus as for "specialist in".

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Source & Trust

84%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: