Quite dry (4)
I believe the answer is:
arid
'quite dry' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for arid that I've seen before include "Very dry; uninteresting" , "(Of land) very dry" , "Sterile" , "Dry and infertile" , "Wadi may be this" .)