drag someone or something through the dirt
drag (someone or something) through the dirt
To say or do something that damages someone or something's reputation. It's very unfortunate that a disgruntled former employee has begun dragging our company's good name through the dirt.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
drag someone or something through the dirt (or mud)make damaging allegations about someone or something.
1998 Economist The deputy prime minister…is having his name dragged through the mud.
Farlex Partner Idioms Dictionary © Farlex 2017