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' indicates an anagram (letters carried to different places).
'raid' with letters rearranged gives '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" .)