Bleak, depressing (5)
I believe the answer is:
drear
I believe this clue is a double definition.
'bleak' is the first definition.
(I've seen this before)
'depressing' is the second definition.
(I've seen this before)
(Other definitions for drear that I've seen before include "Gloomy and cheerless" , "Dull, bleak, depressing" , "grave" , "Dull and tedious" , "Cheerless (literary)" .)