mudslinging

From mud +‎ slinging.

mudslinging (plural mudslingings)

1. Casting aspersions with intent to discredit.

   The campaign degenerated into mutual mudslinging, each candidate trying to tarnish the other's reputation and looking bad in the process.

2. An act of mudslinging.

   The mudslinging didn't help expand the media coverage of the issues; all that was reported was the mudslingings.

• throw enough mud at the wall, some of it will stick