Erudite (adjective)

1. Having or showing extensive knowledge acquired by study, research, or education.
2. Characterized by extensive knowledge and learning.

Origin:

From the latin word eruditus, which means "instructed, educated".

Examples:

1. The professor's lectures were erudite and informative.
2. He was an erudite scholar.
3. His erudite commentary added depth to the discussion.
4. The book was written for an erudite audience.
5. She was an erudite speaker, able to speak on a wide range of topics.