misunderestimation

plural misunderestimations

1. countablenonstandarduncountableAn inaccurate underestimation, or an act of misunderestimating; misestimation of the low-side error type.

   We find even in our own agency very significant misunderestimations of the effectiveness.

   1983, "Mr. Peck", Department of Transportation and related agencies appropriations for 1984: Hearings, page 157

   1 more example

   This is not the first time our president has worried about misunderestimation, so it’s fair to regard this not as a slip of the tongue, but as something the president of the United States thinks is a word.

   2009 January 15, Gail Collins, “He’s Leaving. Really.”, in New York Times