Edward comes round before noon, subdued (5)
I believe the answer is:
tamed
'subdued' is the definition.
('tame' can be a synonym of 'subdue')
'edward comes round before noon' is the wordplay.
'edward' becomes 'ted' (**).
'comes round' is an insertion indicator.
'before noon' becomes 'am'.
'ted' placed around 'am' is 'TAMED'.
(Other definitions for tamed that I've seen before include "Of animals, domesticated" , "Reined" , "Domesticated or subdued" , "now behaving himself?" .)