Begin accepting law broken for loyalist? (8)
I believe the answer is:
stalwart
'loyalist?' is the definition.
('stalwart' can be a synonym of 'loyalist')
'begin accepting law broken' is the wordplay.
'begin' becomes 'start' ('start' can be a synonym of 'begin'**).
'accepting' means one lot of letters goes inside another.
'broken' indicates an anagram.
'law' is an anagram of 'lwa'.
'start' placed around 'lwa' is 'STALWART'.
'for' acts as a link.
(Other definitions for stalwart that I've seen before include "Resolute and firm" , "stout" , "Brick" , "Loyal supporter" , "Determined" .)