Unproductive, bare (6)

I believe the answer is:

barren

This clue is a double definition.

'unproductive' is the first definition.
(synonyms)

'bare' is the second definition.
(synonyms)

(Other definitions for barren that I've seen before include "Arid, infertile" , "Bleak, lifeless" , "Dull" , "Unproductive of life" , "Unable to bear young" .)

I've seen this clue in The Mirror.

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