Roaring at counterpart during loud argument (8,5)
I believe the answer is:
shouting match
'during loud argument' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.
'roaring at counterpart' is the wordplay.
'roaring at' becomes 'shouting' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'counterpart' becomes 'match' (match is a kind of counterpart).
'shouting'+'match'='SHOUTING MATCH'
Can you help me to learn more?
(Other definitions for shouting match that I've seen before include "row" , "Loud quarrel (colloq.)" .)