Adult Green Man turned away (7)
I believe the answer is:
averted
'turned away' is the definition.
('avert' can be a synonym of 'turn away')
'adult green man' is the wordplay.
'adult' becomes 'a' (abbreviation).
'green' becomes 'vert' (I've seen this before).
'man' becomes 'Ed' (short for Edward).
'a'+'vert'+'ed'='AVERTED'
(Other definitions for averted that I've seen before include "Turned away (one's eyes)" , "Prevented, headed off" , "Prevented, warded off" , "Turned away; prevented" , "Staved off" .)