American Heritage Dictionary
(1)
Century Dictionary
GNU Webster's 1913
(1)
WordNet
(1)
Elsewhere on the web
There is a LOT of money to be lost by even minor mitigation of AGW and so, since the facts aren't on the side of "do nothing, it's not a problem", they must polarise opinion, make it all "us" and "them" and demonise, muddy waters and muckrake.— RealClimate
During a Southeast Tennessee Political Action Committee meeting Friday, Councilman Manny Rico twice warned council hopefuls not to muckrake the sitting local government.
"Anyone who promises to 'mock, madden and maybe even muckrake' has my attention - especially when he's fighting for my right to plant my sticks wherever the Constitution says I can."— legitgov
And the media stood by their decision to muckrake by arguing for the public's right to know.— Bloodthirsty Liberal
Sitting around with nothing better to do than muckrake.— The Jawa Report

American Heritage Dictionary (1)
Bubble size: how much this word was used in a year
Bubble height: used more or less than expected, vs. all uses evenly distributed
We are still working on calculating this word's frequency.