Well-read Shakespearean king warned to avoid fight (7)

I believe the answer is:

learned

I'm a little stuck... Click here to teach me more about this clue!

'well-read' is the definition.
('learned' can be a synonym of 'well-read')

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for learned that I've seen before include "Having great knowledge" , "Wise, educated" , "Knowledgeable - scholarly" , "Came to know" , "Literati" .)

I've seen this clue in The Telegraph.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.