miscalculate

verb

Etymology: Etymology tree Proto-Indo-European *mey-? Proto-Indo-European *meyth₂-der. Proto-Germanic *missaz Proto-Germanic *missa- Proto-West Germanic *missa- Old English mis- Middle English mys- English mis- English calculate English miscalculate From mis- + calculate.

1. To calculate incorrectly.

   “They miscalculated by assuming the dimensions were in imperial, not metric.”

2. To make a gross error in judgment.

   “Hitler and the Japanese generals miscalculated badly, 10 years ago, when they thought we would not be able to use our economic power effectively for the defeat of aggression. Let would-be aggressors make no such mistake today.”

   “In the end, one could say with minimal originality, but considerable accuracy, that Bill Simmons simply flew too close to the sun. He miscalculated how much value ESPN put on him and on his unique abilities and talents.”