mudsling
/ˈmʌdslɪŋ/Definitions
1. verb
to speak or write about someone or something in a way that is unfair or untrue, often in order to attack or criticize them
“The politician was accused of mudslinging his opponent during the campaign.”
2. noun
an act of speaking or writing about someone or something in a way that is unfair or untrue
“The mudslinging in the media was a major topic of discussion at the conference.”