Son, unfriendly in front of editor, gets told off (7)
I believe the answer is:
scolded
'told off' is the definition.
(I've seen this before)
'son unfriendly in front of editor' is the wordplay.
'son' becomes 's'.
'unfriendly' becomes 'cold' ('cold' can be similar in meaning to 'unfriendly').
'in front of' says to put letters next to each other.
'editor' becomes 'ed'.
's'+'cold'+'ed'='SCOLDED'
'gets' is the link.
(Other definitions for scolded that I've seen before include "Berated" , "Rebuked angrily" , "Told off" .)