Looking sad, is telling misery to go away (9)

I believe the answer is:

woebegone

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'looking sad' is the definition.
(I've seen this before)

'telling misery to go away' is the wordplay.
'telling misery' becomes 'woe' (woe is a kind of misery. I am not sure about the 'telling' bit.).
'to go away' becomes 'begone' (I've seen this before).
'woe'+'begone'='WOEBEGONE'

'is' is the link.

Can you help me to learn more?

(Other definitions for woebegone that I've seen before include "Miserable-looking" , "dismal look" , "crestfallen" , "forlorn state" , "Looking sad" .)

I've seen this clue in the Evening Standard.

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