Deceptive tactic (4)
I believe the answer is:
ruse
'deceptive tactic' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for ruse that I've seen before include "Trick designed to deceive" , "Subterfuge" , "Cunning plan" , "Sure its a strange deception" , "Deceptive tactic" .)