Definition of slugfest noun from the Oxford Advanced Learner's Dictionary

 

slugfest

 noun
noun
BrE BrE//ˈslʌɡfest//
 
; NAmE NAmE//ˈslʌɡfest//
 
(informal, especially North American English)
 
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an angry argument in which people insult each other The battle between the two Democrats is turning into a nasty little slugfest. The discussion forums are becoming slugfests.
See the Oxford Advanced American Dictionary entry: slugfest