Definitions for muckraker
Random House Webster's College Dictionary
to search for and expose corruption, scandal, or the like, esp. in politics.
Origin of muckrake:
Amer.; popularized by T. Roosevelt in 1906, in a speech alluding to the Man with the Muckrake in Bunyan's Pilgrim's Progress
one who spreads real or alleged scandal about another (usually for political advantage)
One who investigates and exposes issues of corruption that often violate widely held values; e.g. one who exposes political corruption or the poor conditions in prisons.
A sensationalist, scandal-mongering journalist, one who is not driven by any social principles.
One of a group of American investigative reporters, novelists and critics of the Progressive Era (the 1890s to the 1920s)
Origin: Believed to have been coined following a 1906 speech by United States President Theodore Roosevelt, in which he likened the investigative journalist to ‘the Man with the Muck-rake’, a character in John Bunyan's Pilgrim's Progress.
The Roycroft Dictionary
One who sits on the fence and defames American enterprise as it marches by.