Was very angry with Edgar (5)

I believe the answer is:

raged

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

'was very angry' is the definition.
I can't judge whether this defines the answer.

'edgar' is the wordplay.
'edgar' can be anagrammed to 'RAGED'.
Though, I'm not clear how the anagram is indicated.

'with' is the link.

Can you help me to learn more?

(Other definitions for raged that I've seen before include "was having fits" , "Was violently angry" , "Spoke loudly and angrily" , "Felt intense anger" , "Flipped one's lid" .)

I've seen this clue in the Evening Standard.

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