Raid or fight about nothing (5)
I believe the answer is:
foray
'raid' is the definition.
('foray' can be a synonym of 'raid')
'or fight about nothing' is the wordplay.
I cannot really see how this works, but
'or' is present in the answer.
'about' could be 'a' (abbreviation in Chambers) and 'a' is found in the answer.
The remaining letters 'fy' is a valid word which might be clued in a way I don't understand.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for foray that I've seen before include "Raid or incursion" , "Raid for plunder" , "Raid into enemy territory" , ".A sudden attack or raid" , "Brief attack" .)