name is mud, one's

(one's) name is mud

Said of one who is regarded unfavorably, often because their reputation has been tarnished. Despite predating Abraham Lincoln's assassination, the phrase is often said to refer to Dr. Samuel Mudd, who was jailed for treating John Wilkes Booth after Booth shot Lincoln. Now that staff knows that I'm the one who proposed the layoffs, my name is mud. His name is mud now that he's been found guilty of embezzling money from the company.
See also: mud, name

name is mud, one's

One is in trouble, disgraced, or discredited, as in If they find out I broke it, my name will be mud, or If his estimate is completely wrong, his name will be mud. A popular theory for this expression's origin derives it from Dr. Samuel Mudd, the physician who was convicted as conspirator after he set the broken ankle of President Lincoln's assassin, John Wilkes Booth. But the expression was first recorded in 1823, when mud was slang for a stupid person or fool, a usage dating from the early 1700s. Later the term mud simply alluded to discredit.
See also: name