Sad or dull (6)

I believe the answer is:

dreary

This clue is a double definition.

'sad' is the first definition.
(thesaurus)

'dull' is the second definition.
(similar in meaning)

(Other definitions for dreary that I've seen before include "Dismal, depressing" , "Dismal, funeral" , "Grey and dull" , "Dismal, boring" , "Cheerless and depressing" .)

I've seen this clue in The Daily Mail and the Evening Standard.

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