Unhappy though generously benefited? (7)

I believe the answer is:

doleful

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'unhappy' is the definition.
('doleful' can be a synonym of 'unhappy')

I can't explain the remainder of the clue.

(Other definitions for doleful that I've seen before include "Melancholic" , "Causing grief; sorrowful" , "Miserable" , "Sad" , "Dreary" .)

I've seen this clue in the Evening Standard.

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