European shot silly character (5)
I believe the answer is:
ethos
'character' is the definition.
(moral character)
'european shot silly' is the wordplay.
'european' becomes 'E' (abbreviation e.g. EU).
'silly' indicates an anagram.
'shot' with letters rearranged gives 'thos'.
'e'+'thos'='ETHOS'
(Other definitions for ethos that I've seen before include "Spirit (of a group, say)" , "Society values" , "Culture, way of life" , "Underlying culture of a group" , "Distinctive attitudes of a people" .)