mud·sling·ing /ˈmʌdslɪŋɪŋ/ noun [uncountableU] CRITICIZEwhen someone says bad and often untrue things about someone in order to make other people have a low opinion of them 诽谤,中伤 There has been a lot of political mudslinging in the battle for votes. 这次拉票战多次出现政治诽谤。
—mudslinger noun [countableC]