Cultural and moral frame for new beginning (6)
I believe the answer is:
ethnic
'cultural' is the definition.
(synonyms)
'moral frame for new beginning' is the wordplay.
'moral' becomes 'ethic' (I've seen this before).
'frame for' indicates putting letters inside (inserted letters are framed by others).
'beginning' says to take the initial letters.
The first letter of 'new' is 'n'.
'ethic' enclosing 'n' is 'ETHNIC'.
'and' is the link.
(Other definitions for ethnic that I've seen before include "Relating to a particular culture" , "To do with race and its customs" , "from a particular community" , "Characteristic of a human group" , "Relating to a particular racial group" .)