Raid carried out without water (4)
I believe the answer is:
arid
'without water' is the definition.
(I've seen this before)
'raid carried out' is the wordplay.
'carried out' is an anagram indicator (letters carried to different places).
'raid' is an anagram of 'ARID'.
(Other definitions for arid that I've seen before include "Dry and withered" , "(Of an area) very dry" , "Drought-hit" , "Very dry, having little rain" , "Dry, devoid of interest" .)