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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
knows him well
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "knows him well" is correct and usable in written English.
You can use it when describing someone's familiarity or understanding of another person, often in a personal or relational context. Example: "She knows him well enough to understand his motivations and feelings."
✓ Grammatically correct
News & Media
Alternative expressions(2)
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
Keats knows him well.
News & Media
His coach knows him well.
News & Media
The audience knows him well.
News & Media
The truck driver knows him well.
News & Media
"Biden was very courageous," Gelb, who knows him well, said.
News & Media
Crucially, Paul Farbrace knows him well and this is neat.
News & Media
"He got emotional," says one person who knows him well.
News & Media
One Republican who knows him well told me: "He almost never flies first class.
News & Media
"He has the reassuring look of a Scandinavian prime minister," says someone who knows him well.
News & Media
An MP who knows him well suggests he thought a mere ministership beneath him.
News & Media
Amaro knows him well; their fathers worked together, and they played against each other in college.
News & Media
Expert writing Tips
Best practice
Use "knows him well" to suggest a deep understanding of someone's character, habits, or background, often implying a personal relationship or significant experience with that person.
Common error
Avoid using "knows him well" in highly formal or academic writing where a more objective or analytical phrase like "is familiar with his work" or "has studied his methods extensively" might be more appropriate.
Source & Trust
94%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "knows him well" functions primarily as a descriptor, indicating a level of familiarity and understanding between two people. As demonstrated by Ludwig, it's commonly used to express that someone has a deep insight into another person's character or behavior.
Frequent in
News & Media
100%
Less common in
Science
0%
Formal & Business
0%
Encyclopedias
0%
Ludwig's WRAP-UP
The phrase "knows him well" is a common and grammatically sound expression used to indicate a deep understanding of an individual's character and personality. Ludwig confirms its widespread usage, especially within news and media contexts. While generally neutral in register, it's best reserved for situations where personal familiarity is relevant, and should be used judiciously in formal academic settings. Alternatives like "is familiar with him" or "understands him deeply" offer nuanced ways to convey similar meanings. The expression carries a neutral connotation.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
understands him deeply
Suggests a profound insight into the person's emotions, thoughts, and experiences.
has a good understanding of him
Focuses on comprehension of the person's character or motivations, rather than just familiarity.
is well-acquainted with him
Implies a formal or professional relationship, suggesting familiarity through interaction rather than personal connection.
has a close rapport with him
Indicates a harmonious and empathetic connection.
is familiar with him
Indicates a basic level of knowledge or awareness of the person.
appreciates his nature
It emphasizes an understanding and acceptance of his core characteristics.
has known him for a long time
Emphasizes the duration of the relationship, implying familiarity gained over time.
is closely associated with him
Highlights the closeness of the relationship, implying frequent interaction and shared experiences.
is on intimate terms with him
Emphasizes a high level of closeness, familiarity and perhaps even physical intimacy.
is privy to his thoughts
Indicates that the person is aware of another's internal thoughts and feelings.
FAQs
What does it mean to say someone "knows him well"?
Saying someone "knows him well" implies they have a deep understanding of the person's character, personality, and history, usually based on personal experience or close observation.
When is it appropriate to use the phrase "knows him well"?
It's appropriate in contexts where you want to convey a personal understanding or familiarity, such as describing relationships or explaining someone's insights about another person. It is commonly found in "news and media".
What are some alternative ways to say "knows him well"?
You could use phrases like "understands him deeply", "is well-acquainted with him", or "is familiar with him", depending on the specific nuance you want to convey.
Is "knows him well" the same as "knew him well"?
"Knows him well" implies a current understanding and relationship, while "knew him well" suggests a past relationship and understanding. The tense changes the meaning significantly.
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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
94%
Authority and reliability
4.5/5
Expert rating
Real-world application tested