What does knowledgeable mean?
Knowledgeable means having a substantial amount of information about a subject and being able to understand or discuss it intelligently. The word is commonly used to describe people with broad or specialist expertise, as in “a knowledgeable historian,” but it can also modify a source, explanation, or account. Unlike the potentially vague term “smart,” knowledgeable specifically suggests learned understanding and informed judgment. It is often used in professional, academic, and public contexts, where a person’s experience or command of a subject is being emphasized. Although it can sometimes mean broadly well informed, it often implies a depth of knowledge that allows nuanced or authoritative comment. The related adverb “knowledgeably” describes speaking, writing, or acting in a way informed by expertise.
adjectiveHaving or showing good or extensive knowledge about a subject or situation. It describes a person who is well informed, informed, or able to offer informed judgment.
- Having or showing substantial knowledge about a subject, issue, or field.
"The panel included several highly knowledgeable experts in climate science."
"She was knowledgeable about the history and culture of the region."
"The guide offered a knowledgeable explanation of the political crisis."
The word “knowledgeable” contains its own clue: it is built from “knowledge,” so being knowledgeable means being genuinely informed rather than merely sounding confident.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does knowledgeable come from?
The word “knowledgeable” is an adjective formed in the early 19th century from “knowledge” and the suffix “-able,” meaning “capable of having knowledge” or “having much knowledge.” “Knowledge” comes from Old English “cnāwan,” meaning “to know,” which belongs to the same ancient Indo-European root that underlies words such as “acknowledge” and “recognize.” The adjective developed as a descriptive term for a person possessing or displaying understanding.
Related word forms
How knowledgeable is actually used
Generally formal and positive. It can describe someone with specialist knowledge or, less commonly, a well-informed source, argument, or discussion.