Shun European school partners (6)
I believe the answer is:
eschew
'shun' is the definition.
(synonyms)
'european school partners' is the wordplay.
'european' becomes 'e' (abbreviation e.g. EU).
'school' becomes 'sch'.
'partners' becomes 'ew' (East and West are partners in the game bridge).
'e'+'sch'+'ew'='ESCHEW'
(Other definitions for eschew that I've seen before include "Abstain from, shun" , "Abandon" , "Avoid or abstain from, action or food" , "Avoid or abstain from, food or people" , "'Avoid, keep away from (6)'" .)