Deceptive manoeuvres (6)
'deceptive manoeuvres' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for feints that I've seen before include "Deceptive moves" , "Distracting manoeuvres" , "Makes movement to divert attention as in fencing" , "Makes slight attack to divert attention as in fencing" , "Sham maneuvres to distract" .)
(Other definitions for ruses that I've seen before include "Tricks or deceptions" , "Clever strategems or plans" , "cunning tricks" , "Dodges" , "Cunning plans" .)