Psychiatrist right to leave row (4)
I believe the answer is:
feud
'row' is the definition.
(thesaurus)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for feud that I've seen before include "Piece of land once" , "quarrel without end" , "Long-running dispute" , "Private war" , "Conflict" .)