… in vile riot (8)
I believe the answer is:
baseball
'in vile riot' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Maybe there's an association between them I don't understand?
'vile riot' is the wordplay.
'vile' becomes 'base' (synonyms).
'riot' becomes 'ball' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'base'+'ball'='BASEBALL'
Can you help me to learn more?
(Other definitions for baseball that I've seen before include "some Americans enjoy it" , "SPORT/GAME" , "Game played in sable alb?" , "Bale labs out for this game" , "Game played badly in the sable lab" .)