Six women accepting European opinion (4)
I believe the answer is:
view
'opinion' is the definition.
(synonyms)
'six women accepting european' is the wordplay.
'six' becomes 'VI' (Roman numerals).
'women' becomes 'w' (standard abbreviation).
'accepting' means one lot of letters goes inside another (inserted letters are accepted).
'european' becomes 'E' (abbreviation e.g. EU).
'vi'+'w'='viw'
'viw' enclosing 'e' is 'VIEW'.
(Other definitions for view that I've seen before include "Survey - opinion" , "Opinion or aspect" , "Aspect, scene" , "belief" , "Sight - opinion" .)