Not wild (4)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
tame
'not wild' is the definition.
('tame' is the opposite to 'wild')
This is the entire clue.
(Other definitions for tame that I've seen before include "Flat" , "'Domesticated, docile (4)'" , "Broken in" , "Not exciting; cooperative" , "Domesticated kind of meat" .)