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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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best at what

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "best at what" is correct and usable in written English. You can use it when asking for clarification about someone's specific skills or strengths. Example: "She is the best at what she does, but I'm not sure what that is." Alternative expressions include "best in what" and "top at what."

News & Media

Formal & Business

Science

Human-verified examples from authoritative sources

Exact Expressions

58 human-written examples

I'm the best at what I do.

News & Media

The New York Times

He's the best at what he does.

"And I know I'm the best at what I do".

News & Media

The New York Times

"He's the best at what he does," Jorge Posada said.

"Robbie is the best at what he does," Ortiz said.

This is why he's the best at what he does, because that's how he feels.

News & Media

The New Yorker

"He wanted to try to be the best at what he did".

"It doesn't matter what country they're from because they're the best at what they do".

Lorne, because he's the best at what he does, is the one who saw it.

News & Media

The New Yorker

"I want Shani to be the best at what he does," Thibault said.

"These guys are two of the best at what they do," Kelleher said.

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Expert writing Tips

Best practice

Ensure the clause following "what" clearly identifies the activity or role, such as "the best at what they do" or "the best at what I want to achieve".

Common error

Writers sometimes mistakenly use "best in what" when referring to an action or skill. While "best in the world" is correct for a location, "best at what" is the idiomatic standard for relative clauses describing skills or professions.

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

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

96%

Authority and reliability

4.9/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "best at what" functions as a complex superlative construction. It combines the superlative adjective "best" with the preposition "at" and a relative pronoun "what" to introduce a noun clause. In Ludwig, this structure is frequently observed to specify the exact domain of a person's expertise, acting as a restrictive modifier that clarifies the scope of the excellence being claimed.

Frequent in

News & Media

55%

Formal & Business

25%

Science & Research

10%

Less common in

Encyclopedias

5%

Wiki

3%

Social Media

2%

Ludwig's WRAP-UP

The phrase "best at what" is an essential tool in English for pinpointing excellence. According to Ludwig AI and the analyzed dataset, it is used consistently by major global publications to denote that a subject has reached the pinnacle of their specific craft. Unlike a simple 'the best', this construction is more precise because it creates a direct link between the person and their action (e.g., 'the best at what they do'). It is grammatically correct and highly recommended for professional contexts where specificity adds weight to a compliment or a competitive claim. Whether in sports, business or the arts, using "best at what" helps define a unique value proposition clearly and effectively.

FAQs

How do I use "best at what" in a sentence?

You can use it to describe peak performance in a specific role, for example: "She is clearly the "best at what she does" in the marketing department".

What is a more formal way to say "best at what"?

In formal writing, you might prefer phrases like "unsurpassed in", "preeminent in", or "unrivaled at".

Is it "best at what" or "best in what"?

While both can appear, "best at what" is significantly more common when describing the mastery of a craft or job. If you are referring to a category, you might use "best in class".

Can I use "best at what" in business emails?

Yes, it is perfectly appropriate for professional contexts, especially when giving a recommendation or highlighting a company's competitive edge, such as being the "leading provider of" services.

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Source & Trust

96%

Authority and reliability

4.9/5

Expert rating

Real-world application tested

Most frequent sentences: