miscalculate

[ mis-kal-kyuh-leyt ]

/ mɪsˈkæl kyəˌleɪt /

to calculate or judge incorrectly: to miscalculate the time required.

Origin of miscalculate

First recorded in 1690–1700; mis-¹ + calculate

mis·cal·cu·la·tion, noun mis·cal·cu·la·tor, noun

That miscalculation could mean serious trouble in terms of actuarial soundness.

With More Competition and Choice, Obamacare Might Not Be So Horrible |Nick Gillespie |May 12, 2014 |DAILY BEAST
What they most have to fear is their own wimpiness –-or miscalculation.

Democrats Must Run on Obamacare in November |Robert Shrum |March 17, 2014 |DAILY BEAST
He simply stated the miscalculation that had defined much of his life and mine.

The Fourth War: My Lunch with a Jihadi |Elliot Ackerman |January 21, 2014 |DAILY BEAST
"This will raise regional tensions and increase the risk of miscalculation, confrontation and accidents," she said.

U.S. Uses B-52 Bombers to Brush Back Chinese Expansion |Nico Hines |November 27, 2013 |DAILY BEAST

But of course Kerry hasn't exactly bowled the world over lately with his misstatements, so maybe this is a miscalculation.

Why Would Assad Negotiate? |Michael Tomasky |September 13, 2013 |DAILY BEAST
They corrected their miscalculation by broadening the division of the wall between the fourth and fifth bay of the aisles.

The Ground Plan of the English Parish Church |A. Hamilton Thompson
Ustd Al-qul must have made some miscalculation either as to the furnaces or the materials.

The Bbur-nma in English |Babur, Emperor of Hindustan
There has always been a miscalculation about the weight of counter-balance; they are universally too heavy.

Stories of the Railroad |John A. Hill
That was determined by his Russian miscalculation and by his subsequent and consequent defeat at Leipsic.

The French Revolution |Hilaire Belloc
It is now universally admitted that our last Continental war—the Crimean war—was a monstrous error and miscalculation.

New York Times, Current History, Vol 1, Issue 1 |Various

miscalculate

/ (ˌmɪsˈkælkjʊˌleɪt) /

(tr) to calculate wrongly

miscalculation, noun miscalculator, noun