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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
fluency in
Grammar usage guide and real-world examplesUSAGE 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
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
57 human-written examples
Fluency in French and Spanish.
News & Media
His fluency in languages helped throughout his career.
News & Media
Expressing fluency in the international language of stupid?
News & Media
The Literature major required fluency in but one.
News & Media
Fluency in the public language, like fluency in a second language, can be achieved with enough practice.
News & Media
He must have gained a fluency in human frailty.
News & Media
But the hosts lacked confidence and fluency in attack.
News & Media
(His own fluency in French was crucial, of course).
News & Media
He entrances people here with his fluency in Japanese.
News & Media
Fluency in English is no guarantee of moderation.
News & Media
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
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.
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.
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.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
proficiency in
Focuses more directly on demonstrated skill or competence.
mastery of
Implies a high level of skill and comprehensive knowledge.
expertise in
Emphasizes specialized knowledge and skill in a particular area.
skill in
A more general term for competence or ability.
competence in
Highlights the ability to adequately perform a task or function.
aptitude for
Suggests a natural ability or talent.
adeptness at
Indicates a skillful and proficient performance.
familiarity with
Implies a good working knowledge, but not necessarily complete mastery.
command of
Highlights the ability to use something effectively.
understanding of
Focuses on comprehension and knowledge rather than practical skill.
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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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested