Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
was familiar with
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "was familiar with" is correct and usable in written English.
You can use it to indicate that someone has knowledge or experience regarding a particular subject or topic. Example: "She was familiar with the latest research in renewable energy technologies."
✓ Grammatically correct
News & Media
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
60 human-written examples
He was familiar with the Jets.
News & Media
I was familiar with the subject.
News & Media
She was familiar with his work.
News & Media
He was familiar with discomfort.
News & Media
He was familiar with that.
News & Media
Hawkins was familiar with the outsider's role.
News & Media
My maternal grandmother was familiar with fate.
News & Media
I was familiar with the source material.
News & Media
Everyone was familiar with the coordinates.
News & Media
"He was familiar with young ladies".
News & Media
"Everyone was familiar with the stereotype".
News & Media
Expert writing Tips
Best practice
Use "was familiar with" to indicate a level of knowledge or experience that is more than just basic awareness but less than expertise. For example, "She was familiar with the software, but needed further training to master it."
Common error
Avoid using "was familiar with" when you mean to convey expert-level knowledge or proficiency. Instead, use phrases like "was proficient in" or "had mastered".
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "was familiar with" functions as a predicate adjective, modifying the subject by describing a state of knowing or having experience with something. Ludwig confirms its grammatical correctness and usability.
Frequent in
News & Media
75%
Academia
10%
Wiki
7%
Less common in
Science
5%
Reference
2%
Formal & Business
1%
Ludwig's WRAP-UP
The phrase "was familiar with" is a versatile and commonly used way to indicate a level of knowledge or experience, as confirmed by Ludwig. It's grammatically sound and suitable for various contexts, particularly in news, media, and academic settings. While it conveys understanding, it doesn't necessarily imply expertise. When writing, choose it to show prior knowledge without overstating proficiency. Remember that, while "was familiar with" is suitable for many scenarios, alternatives such as "was acquainted with" or "had knowledge of" might be more appropriate based on the specific nuance you wish to convey.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
was acquainted with
Implies a less in-depth knowledge than "was familiar with".
had knowledge of
More formal and emphasizes factual understanding rather than experiential knowledge.
was conversant with
Suggests the ability to discuss something in detail, implying a high degree of familiarity.
was well-versed in
Indicates a comprehensive understanding and extensive knowledge.
had experience with
Focuses on practical involvement rather than just theoretical knowledge.
was aware of
Implies a basic understanding or knowledge, often without deep experience.
knew about
A more casual and less formal way to express familiarity.
was no stranger to
Idiomatic expression indicating frequent or significant exposure to something, often negative.
had a background in
Suggests formal training or education in a specific area.
was introduced to
Implies an initial encounter or basic exposure to something.
FAQs
What does "was familiar with" mean?
The phrase "was familiar with" means having a good understanding or knowledge of something, often based on prior experience or study. It implies a level of acquaintance that is more than simply being aware, but less than being an expert.
How can I use "was familiar with" in a sentence?
You can use "was familiar with" to describe someone's knowledge or experience regarding a particular subject or topic. For example, "He "was familiar with" the local customs because he had lived there for many years."
What can I say instead of "was familiar with"?
You can use alternatives like "was acquainted with", "had knowledge of", or "was aware of" depending on the context.
Is it correct to say "I am familiar with" or "I was familiar with"?
Both "I am familiar with" and "I was familiar with" are grammatically correct, but they refer to different time frames. "I am familiar with" refers to present knowledge, while "I was familiar with" refers to past knowledge.
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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
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested