Avoid, ignore (4)
I believe the answer is:
shun
This clue is a double definition.
'avoid' is the first definition.
(I know that shun has the is a more specific form of the action avoid)
'ignore' is the second definition.
(I've seen this before)
(Other definitions for shun that I've seen before include "military command" , "Keep away from, have nothint to do with" , "Spurn; avoid" , "Ostracise" , "Cold-shoulder" .)