mudslinging /ˈmʌdˌslɪŋɪŋ/ noun Learner's definition of MUDSLINGING
[noncount]
: the act or practice of publicly saying false or bad things about someone (such as a political opponent) in order to harm that person's reputation中伤，诽谤（政敌等） — mudslinger
/ˈmʌdˌslɪŋɚ/ noun, plural mudslingers [count]