Common man taking peacekeeper before European (7)
I believe the answer is:
mundane
'common' is the definition.
(thesaurus)
'man taking peacekeeper before european' is the wordplay.
'man' becomes 'm'.
'taking' is a charade indicator (letters next to each other).
'peacekeeper' becomes 'un' (I've seen this in other clues).
'before' is a charade indicator (letters next to each other).
'european' becomes 'dane' (someone from Denmark).
'm'+'un'+'dane'='MUNDANE'
(Other definitions for mundane that I've seen before include "Everyday, humdrum" , "Drab" , "Dull - commonplace" , "Banal; earthly" , "Worldly, perhaps dull" .)