Make soaking wet (3)
I believe the answer is:
sop
'make soaking wet' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for sop that I've seen before include "Something of no great value given to appease" , "A bribe or appeasement" , "Appeasing gift" , "Bread dipped in gravy" , "usual way of doing things, initially" .)