Loyal, firm (7)
I believe the answer is:
staunch
I believe this is a double definition.
'loyal' is the first definition.
(I've seen this in another clue)
'firm' is the second definition.
(I've seen this before)
(Other definitions for staunch that I've seen before include "Stop bleeding; trusty" , "Hun acts in firm and loyal way" , "Arrest" , "way to limit bloodshed" , "Very loyal; stop (a flow of blood)" .)