Avoid deliberately (4)
I believe the answer is:
shun
'avoid deliberately' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for shun that I've seen before include "Deliberately have no contact with" , "attention in the army" , "Keep away from, have nothint to do with" , "Persistently reject" , "Keep away from Huns" .)