he is an expert in

USAGE SUMMARY

The phrase "he is an expert in" is correct and usable in written English.
You can use it to indicate that someone has a particular skill or knowledge. For example, "John is an expert in computer programming."

✓ Grammatically correct

News & Media

Science

Human-verified examples from authoritative sources

Exact Expressions

58 human-written examples

He is an expert in terrorist weapons and explosives.

The New York Times

Unless he is an expert in options pricing, probably not.

The New York Times

He is an expert in the economic history of the Great Depression.

The New Yorker

He is an expert in global investment management and structuring complex financial transactions.

The New York Times

He is an expert in what he calls "the epidemiology of development".

The New York Times

He is an expert in queuing theory, if not in Manhattan shopping.

The New York Times

He knows violence from every angle; he is an expert in anguish.

The Guardian

He is an expert in the treatment of severe, life-threatening allergies.

The New Yorker

He is an expert in the creation of modern Hebrew, the great success story of language revival.

The New York Times - Books

He is an expert in community engagement and popular local government blogger for the We Love Local Government blog.

The Guardian

He is an expert in counter-terrorism and has also served in a security role at the Home Office.

The Guardian

Expert writing Tips

Best practice

When using "he is an expert in", ensure you can provide specific examples or evidence of their expertise to lend credibility to your statement. For instance, instead of saying "He is an expert in finance", you could say "He is an expert in finance, having managed multi-million dollar portfolios for over a decade."

Common error

Avoid using "he is an expert in" loosely. Overusing the term without backing it up with concrete achievements or qualifications can diminish its impact and credibility. Instead, provide context to substantiate the claim.

Linguistic Context

The phrase "he is an expert in" functions as a means of ascribing specialized knowledge or skill to an individual. As Ludwig AI confirms, it is considered correct and widely usable in English. It highlights that someone possesses a high degree of competence and authority in a specific domain.

Expression frequency: Very common

Frequent in

News & Media

52%

Science

29%

Formal & Business

9%

Less common in

Wiki

3%

Reference

2%

Academia

1%

Ludwig's WRAP-UP

In summary, the phrase "he is an expert in" is a grammatically sound and widely accepted way to denote someone's high level of skill or knowledge in a specific area. As Ludwig AI points out, it's correct and usable in written English. It's frequently found in News & Media and Science, highlighting its versatility across various contexts. When employing this phrase, remember to provide supporting evidence to bolster credibility and avoid overstating expertise without justification. Using alternative phrasing, such as "he is proficient in" or "he has expertise in", can add nuance and precision to your writing. Keep in mind that the choice between "he is an expert in" and "he is an expert on" hinges on whether you're referring to a skill or area of practice versus a broader understanding of a subject.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

he has expertise in

Transforms the phrase to emphasize the possession of expertise as a quality.

he is highly competent in

Emphasizes a high level of capability and effectiveness in a particular domain.

he is proficient in

Replaces "expert" with "proficient", indicating competence rather than top-tier skill.

he is skilled in

Uses "skilled" instead of "expert", suggesting a high degree of ability acquired through practice.

he is adept at

Similar to "skilled", but often implies a natural talent or quickness in learning.

he is knowledgeable about

Focuses on the depth of knowledge rather than practical skill.

he is well-versed in

Implies a comprehensive understanding and familiarity with a subject.

he is a leading authority on

Positions the person as a recognized and influential figure in a specific field.

he is a master of

Elevates the level of expertise to mastery, suggesting exceptional skill and control.

he specializes in

Highlights specific area of focus within a broader field, emphasizing specialization.

FAQs

What does it mean to say "he is an expert in" something?

Saying "he is an expert in" something means that he has a comprehensive and authoritative knowledge in a particular field or area. It implies that he is highly skilled and experienced in that subject.

What are some alternatives to saying "he is an expert in"?

You can use alternatives like "he is proficient in", "he is skilled in", or "he has expertise in" depending on the context.

How do you properly use "he is an expert in" in a sentence?

Use "he is an expert in" to introduce someone's area of deep knowledge or skill. For example, "He is an expert in data analysis, having published several papers on the subject."

Is it better to say "he is an expert on" or "he is an expert in"?

While both are acceptable, "he is an expert in" typically refers to a specific skill or area of practice. "He is an expert on" suggests broader, theoretical knowledge of a subject. The best choice depends on the specific context.