A wild urge to quarrel (5)
I believe the answer is:
argue
'to quarrel' is the definition.
(I've seen this before)
'a wild urge' is the wordplay.
'wild' is an anagram indicator.
'urge' is an anagram of 'rgue'.
'a'+'rgue'='ARGUE'
(Other definitions for argue that I've seen before include "Fall out" , "Disagree violently" , "Debate or disagree" , "Dispute, disagree" , "Fabric hanging in folds" .)