slanging match
noun [ C ] UK informal uk/ˈslæŋ.ɪŋ ˌmætʃ/ us/ˈslæŋ.ɪŋ ˌmætʃ/
对骂，互相谩骂
an argument in which both people use angry uncontrolled language and insult each other
The politicians started a slanging match in the middle of the debate. 辩论中，政客们开始互相谩骂起来。