Brave, courageous (7)
I believe the answer is:
valiant
I believe this is a double definition.
'brave' is the first definition.
(similar in meaning)
'courageous' is the second definition.
(similar in meaning)
(Other definitions for valiant that I've seen before include "Doughty" , "Stout" , "Courageous, determined" , "Brave in battle" , "Showing courage" .)