Long way back after run — that’s very chaotic (7)
I believe the answer is:
farrago
'run that's very chaotic' is the definition.
I can't tell whether this defines the answer.
'long way back after' is the wordplay.
'long' becomes 'far' (similar in meaning).
'way' becomes 'R' (abbreviation for right).
'back' becomes 'ago' ('years back' means 'years ago').
'after' is a charade indicator (letters next to each other).
'far'+'r'+'ago'='FARRAGO'
Can you help me to learn more?
(Other definitions for farrago that I've seen before include "Jumbled mixture" , "Motley assortment of things" , "A hotchpotch, perhaps of nonsense" , "Confusion" , "Mix" .)