Artist gloomier after losing love (5)

I believe the answer is:

durer

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

I can't explain the rest of the clue.

(Other definitions for durer that I've seen before include "Albrecht --, German painter/engraver" , "Old master" , "Albrecht -, Nuremburg artist" , "Albrecht --, German painter and engraver" , "Albrecht --, German engraver/painter" .)

I've seen this clue in The Guardian.

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