Cultural moral code overwhelms Putin finally (6)
I believe the answer is:
ethnic
'cultural' is the definition.
(synonyms)
'moral code overwhelms putin finally' is the wordplay.
'moral code' becomes 'ethic' (I've seen this before).
'overwhelms' indicates putting letters inside.
'finally' says to take the final letters.
The last letter of 'putin' is 'n'.
'ethic' enclosing 'n' is 'ETHNIC'.
(Other definitions for ethnic that I've seen before include "Relating to races" , "Denoting the cultural traditions of a group" , "To do with race or nationality" , "Relating to national and cultural origins" , "Etch in (anag.)" .)