ENGLISH
REFERENCE

knowledgeable

adj.
US //ˈnɑɫədʒəbəɫ// UK //nˈɒlɪdʒəbəl// knowl·edge·able
  1. 1 well-informed (adj.)
    B2 Upper Intermediate

    knowing a lot about many things or a specific topic.

    possessing or exhibiting comprehensive knowledge or understanding of a subject.

    Example

    Our guide was very knowledgeable about the history of the castle.

    Example

    The professor is exceptionally knowledgeable about medieval architecture, having spent decades researching the structural evolution of European cathedrals.
    Pitfall
    He is very knowledgeable for history.
    He is very knowledgeable about history.

    Use the preposition 'about' to specify the subject someone knows well.

Origin

From knowledge + -able.

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