Warrior, struggler (7)
I believe the answer is:
fighter
I believe this clue is a double definition.
'warrior' is the first definition.
(I know that warrior can be written as fighter)
'struggler' is the second definition.
(thesaurus)
(Other definitions for fighter that I've seen before include "Professional boxer - a person with determination" , "See 12" , "Freight (anag.)" , "Combat aircraft" , "Plane" .)