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Justyna Jupowicz-Kozak quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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fluency in

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "fluency in" is a correct and usable phrase in written English.
You would use it to refer to someone's level of ability with a language, such as "John's fluency in French is excellent."

✓ Grammatically correct

News & Media

Formal & Business

Science

Human-verified examples from authoritative sources

Exact Expressions

57 human-written examples

Fluency in French and Spanish.

News & Media

The New York Times

His fluency in languages helped throughout his career.

News & Media

The New York Times

Expressing fluency in the international language of stupid?

News & Media

The Guardian

The Literature major required fluency in but one.

News & Media

The New Yorker

Fluency in the public language, like fluency in a second language, can be achieved with enough practice.

News & Media

The New Yorker

He must have gained a fluency in human frailty.

News & Media

The New York Times

But the hosts lacked confidence and fluency in attack.

News & Media

Independent

(His own fluency in French was crucial, of course).

He entrances people here with his fluency in Japanese.

Fluency in English is no guarantee of moderation.

News & Media

The Economist

The design of their school day is intended to give the Spanish speakers fluency in English while giving the English speakers fluency in Spanish.

News & Media

The New York Times
Show more...

Expert writing Tips

Best practice

When describing someone's language abilities, specify the context. For example, instead of saying "She has "fluency in" French", specify "She has "fluency in" conversational French".

Common error

Avoid overstating someone's abilities. "Fluency in" a subject implies a high level of competence; using it when someone has only basic knowledge can be misleading.

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

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

88%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "fluency in" functions as a noun phrase followed by a preposition. It commonly precedes a noun or noun phrase, indicating a high level of skill or competence in a particular area. Ludwig AI confirms that it is a correct and usable phrase.

Expression frequency: Very common

Frequent in

News & Media

47%

Formal & Business

15%

Science

14%

Less common in

Huffington Post

17%

The New Yorker

3%

Unicef

3%

Ludwig's WRAP-UP

The phrase "fluency in" is a well-established and widely used expression to denote proficiency or expertise in a particular field. Ludwig AI confirms its grammatical correctness, and it appears frequently across diverse contexts, including news, business, and scientific domains. When using this phrase, ensure that you accurately represent the level of competence and tailor it to the appropriate register. Alternative phrases like "proficiency in" or "mastery of" may be used depending on the specific nuance you want to convey. Avoid overstating abilities and always provide context for clarity.

FAQs

How do you use "fluency in" in a sentence?

You can use "fluency in" to describe someone's proficiency in a language or a subject. For example, "His "fluency in" Spanish helped him get the job" or "She demonstrated "fluency in" data analysis during the presentation".

What are some synonyms for "fluency in"?

Synonyms for "fluency in" include "proficiency in", "mastery of", and "expertise in", depending on the specific context.

Which is correct, "fluency in" or "fluent in"?

"Fluency in" is a noun phrase used to describe the state of being fluent. "Fluent in" is an adjective phrase used to describe someone who possesses fluency. For example, "He has "fluency in" French" versus "He is "fluent in" French".

What's the difference between "fluency in" and "knowledge of"?

"Fluency in" implies a high level of competence and ease of use, while "knowledge of" suggests understanding and awareness, but not necessarily the ability to use something effectively. You can have "knowledge of" a language without having "fluency in" it.

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Source & Trust

88%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: