Aggressive fellow possibly frightened by Ned (7)
I believe the answer is:
fighter
This clue could be a double definition.
'aggressive fellow' is the first definition.
The answer and definition can be both people as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'frightened by ned' is the second definition.
The definition suggests a singular noun which matches the answer.
'possibly' acts as a link.
Can you help me to learn more?
(Other definitions for fighter that I've seen before include "Fast military aircraft" , "Professional boxer - a person with determination" , "Freight (anag.)" , "Military jet" , "Boxer; warrior" .)