Moral confusion of huge riots (9)
I believe the answer is:
righteous
'moral' is the definition.
(associated in meaning)
'confusion of huge riots' is the wordplay.
'confusion of' is an anagram indicator (I've seen this in other clues).
'huge'+'riots'='hugeriots'
'hugeriots' anagrammed gives 'RIGHTEOUS'.
(Other definitions for righteous that I've seen before include "Morally justifiable, or people who behave thus" , "Showing virtue" , "Morally justified" , "Good!" , "Just, upright" .)