Avoid; shun (6)
I believe the answer is:
eschew
This clue is a double definition.
'avoid' is the first definition.
(eschewing is a kind of avoiding)
'shun' is the second definition.
(synonyms)
(Other definitions for eschew that I've seen before include "'Avoid, shun (6)'" , "'Stay clear of, shun (6)'" , "Abstain from (an activity)" , "Avoid,shun" , "Avoid or abstain from (6)" .)