sb's name is mud
〈非正〉声名狼藉sb is unpopular and spoken about with disapproval after causing trouble
His name is mud when it happened.这事发生后,他就声名狼藉了。

throw〔fling, sling〕 mud at
企图破坏某人的名声try to damage sb's reputation
He throws mud at his competitors.他毁谤自己的对手。

Mud caked on his shoes.烂泥粘在他的鞋上。
After the rain, the roads were covered in mud.雨后路上全是泥浆。

［词源］＜中古低地德语mudde(泥,淤泥)