Deceptive motion (5)
I believe the answer is:
feint
'deceptive motion' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for feint that I've seen before include "Deceptive movement designed to distract" , "False fencing trust sounds dim" , "Deceptive move by a boxer, for example" , "Pretended blow" , "(Make a) deceptive move" .)