mud-slinging

n.

诽谤；中伤；

1. She often threw mud at her colleagues.
   她经常诽谤她的同事。
2. They were using not criticism but mud.
   他们不是在批评而是在诽谤。

Mud slinging
Mud-slinging
Mud Slinging
Voter perception of mud‐slinging in political communication
Global Patterns of Virtual Mudslinging? The Use of Attacks on German Party Websites in State, National and European Parliamentary El...
MUD Slinging: Virtual Orchestration of Physical Interactions
Turning negatives to positives--moving mudslinging to child health betterment.
Mudslinging and Manners: Unpacking Conflict in Free and Open Source Software
Mud-Slinging over Sewage Technology
Global Patterns of Virtual Mudslinging: Comparing the Use of Attacks on German and American Campaign Websites
Global Patterns of Virtual Mudslinging: Evidence From German Party Web Sites in State, National, and European Parliamentary Elections
The modern political campaign : mudslinging, bombast, and the vitality of American politics
Mudslinging Weasels Into Online History