What does "mudslinging" mean?

Casting aspersions with intent to discredit.

What is a synonym for "mudslinging"?

Common synonyms include: ad hominem, ad hominem rhetoric, attack, besmirch, blackening, calumniate.

noun

noun ·3 syllables ·Uncommon ·College level

Noun

1
Casting aspersions with intent to discredit. uncountable, usually
"The campaign degenerated into mutual mudslinging, each candidate trying to tarnish the other's reputation and looking bad in the process."

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

From mud + slinging.