knowledgeable on the subject

USAGE SUMMARY

The phrase "knowledgeable on the subject" is correct and usable in written English.
You would use it to describe someone who is well-informed about a particular topic. For example, "John is very knowledgeable on the subject of tax law. He is the perfect person to answer your questions about it."

✓ Grammatically correct

News & Media

Academia

Science

Wiki

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

18 human-written examples

Earth and Fire call such enthusiasts, and anyone extremely knowledgeable on the subject, drug geeks.

The New Yorker

In community question answering (cQA), users pose queries (or questions) on portals like Yahoo! Answers which can then be answered by other users who are often knowledgeable on the subject.

Knowledge-Based Systems

But their training is proceeding, as someone knowledgeable on the subject put it, "on pigeon time," so this may not occur until later in the run of the piece.

The New York Times - Arts

· Traditional high-street travel agents have their uses, but go to a specialist for discounted long-haul flights: they will be aware of more options, be more knowledgeable on the subject, and offer more competitive prices.

The Guardian - Travel

The American most knowledgeable on the subject – Bill Clinton's defence secretary William J Perry – has just published a book warning that "nuclear doom" is closer today than it ever was during the cold war.

The Guardian - Opinion

Some kids came in already knowledgeable on the subject of Emerald Ash Borer or Asian Longhorned Beetle, and other kids came in asking questions to us or their parents and genuinely interested in what had to be said.

Cornell University

Human-verified similar examples from authoritative sources

Similar Expressions

42 human-written examples

Though perhaps the people most knowledgeable of the subject at hand, our views have never been sought.

HuffPost

The site is populated by college students, high school students, educators, and those that are knowledgeable on the subjects to help students.

TechCrunch

Often, you can move an item from column two to column one by just asking a few knowledgeable people on the subject, whether it's regarding your likelihood of a promotion or your job security.

HuffPost

His vice president was the world's most knowledgeable politician on the subject.

The New York Times

Mr. Hatch, who says Mr. Clinton has delayed the search for justice, is himself a knowledgeable expert on the subject.

The New York Times

Expert writing Tips

Best practice

When describing someone's expertise, follow "knowledgeable on the subject" with specific examples of their knowledge or experience to add credibility.

Common error

Avoid assuming someone is "knowledgeable on the subject" without verifying their actual understanding. A superficial familiarity doesn't equate to genuine expertise.

Linguistic Context

The phrase "knowledgeable on the subject" functions as an adjectival phrase, modifying a noun to indicate expertise or a high level of understanding regarding a specific topic. As noted by Ludwig, the phrase is considered grammatically correct.

Expression frequency: Common

Frequent in

News & Media

35%

Academia

20%

Science

20%

Less common in

Wiki

15%

Formal & Business

10%

Reference

0%

Ludwig's WRAP-UP

In summary, "knowledgeable on the subject" is a grammatically correct and commonly used phrase to describe someone with expertise or a deep understanding of a particular topic. As Ludwig AI confirms, this phrase is suitable for various contexts, ranging from news and media to academic and professional settings. When using the phrase, ensure that the context supports the claim of expertise and consider providing specific examples to reinforce credibility. While alternatives like ""well-informed about the topic"" or ""expert in the field"" exist, the choice depends on the specific nuance you wish to convey.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

well-informed about the topic

Focuses more on the state of being informed, subtly shifting the emphasis from possessing knowledge to being up-to-date.

conversant with the subject matter

Indicates a familiarity and ease of discussion, implying a practical understanding.

expert in the field

Suggests a higher level of mastery and authority, indicating specialized knowledge.

proficient in the area

Emphasizes competence and skill within a specific domain.

familiar with the details

Highlights acquaintance with specific information.

has a good grasp of the subject

Focuses on comprehension and understanding.

well-versed in the matter

Suggests extensive knowledge gained through study or experience.

highly acquainted with the topic

Underscores familiarity and personal knowledge.

deeply learned in the area

Highlights a profound and scholarly understanding.

has expertise on the matter

Emphasizes specialized knowledge and skill.

FAQs

How can I use "knowledgeable on the subject" in a sentence?

Use "knowledgeable on the subject" to describe someone who possesses considerable information and understanding about a particular topic. For example, "She is "knowledgeable on the subject" of environmental policy, making her a valuable asset to the team".

What are some alternative ways to say "knowledgeable on the subject"?

Alternatives include "well-informed about the topic", "conversant with the subject matter", or "expert in the field", depending on the specific nuance you wish to convey.

Is it more appropriate to say "knowledgeable about the subject" or "knowledgeable on the subject"?

Both "knowledgeable about the subject" and "knowledgeable on the subject" are grammatically correct and widely used. The choice often depends on personal preference, although "knowledgeable about" might be slightly more common in contemporary usage.

How does being "knowledgeable on the subject" differ from being simply "informed"?

While being "informed" implies having access to information, being "knowledgeable on the subject" suggests a deeper level of understanding, comprehension, and potentially the ability to apply that information in a meaningful way.