sling mud at

Idioms  

1. Insult or discredit someone, as in The paper became famous for slinging mud at movie stars. This term replaced throw mud at, which dates from the second half of the 1700s.

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Example Sentences

What she had done — using a finsta to sling mud at her cast mates — is barely a misdemeanor according to the “Real Housewives” penal code.

From Los Angeles Times • Jan. 23, 2024

In fact, "last summer, when Moscow began to sling mud at me, I threw my Soviet passport in the fire."

From Time Magazine Archive

It is now the fashion to sling mud at a rival language by calling it "arbitrary" and "fantastic"; and these epithets are freely applied to Esperanto.

From International Language Past, Present and Future: With Specimens of Esperanto and Grammar by Clark, Walter John