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a term to describe a person's tendency to ignore facts, spoken or otherwise, when those facts are opposing to the person's own viewpoint.
Doctor: I'm afraid you only have two weeks to live.
Rumsfeldian: Yeah, my health gets better every year.

Banker: Your account is overdrawn.
Rumsfeldian: I'll write a check to cover it.
by Hates_ November 22, 2006
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May 7 Word of the Day
Paper product used as a barrier against unwanted messes, such as the liner at the bottom of a bird cage.
Please put a New York Times under that before it gets all over the place.
by Phaedrus331 February 12, 2021
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Derived from Donald Rumsfeld, erstwhile SECDEF and all-around meanie, the term "rumsfeldian" is an adjective used to describe a truly tremendous blunder, such as NOT pursuing the jihadis in Afghanistan or invading/occupying a hostile country with far too few troops.
He really screwed the pooch on that one! It was positively rumsfeldian!!
by succulentboi August 25, 2004
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Use of profound logic to confound the opposition, often yourself.
"We have known knowns(things we know we know), known unknowns(things we know we don't know), unknown unknowns (things we don't know we don't know), and unknown knowns (things we don't know we know)" came the rumsfeldian reply to the reporters question.
by KennethM September 11, 2007
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