idiom USinformal to make critical or insulting comments to someone, especially an opponent: 批评，攻击（尤指对手） We argue and fight and talk smack to each other.我们争吵不休，互相攻击。 See also
smack talk SMART Vocabulary: related words and phrases Insults & abuse abusive abusively backhanded compliment brickbat catcall catcaller catcalling contumely dis jeer mouth mouth off (to/at someone) name neg negging point-scoring revile sledging slight stick