noun.
The quality or state of being improbable; unlikelihood.
noun.
That which is improbable; an improbable event or result.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
the quality of being improbable
Word Usage
"And Chullunder Ghose describes it as "the inside-out-ishness of paradox pursued to ultimate improbability, which is the essence of the quest for truth.""