Alternative form of do someone dirty

(slang) To die.

(simile) very old

(idiomatic) To treat someone badly, especially with disrespect or contempt.

simple past tense and past participle of dig up dirt

present participle of dig up dirt

Third-person singular simple present indicative form of dig up dirt

If enough allegations are made about someone or something, then even if they are all untrue, people's opinion of the person or thing will be diminished.