Drear (5)
I believe the answer is:
bleak
'drear' is the definition.
(thesaurus)
This is all the clue.
(Other definitions for bleak that I've seen before include "Exposed and barren" , "Dreary; cold, miserable" , "Exposed to the elements" , "Desolate and barren" , "Unpleasantly cold" .)