Meaning of “miscalculate” in the English Dictionary

"miscalculate" in British English

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miscalculateverb [ I or T ]

uk /mɪsˈkæl.kjə.leɪt/ us /mɪsˈkæl.kjə.leɪt/
noun [ C or U ] uk /ˌmɪs.kæl.kjəˈleɪ.ʃən/ us /ˌmɪs.kæl.kjəˈleɪ.ʃən/

The project went over budget because of a miscalculation at the planning stage.
The conspirators' plot failed because they made two fatal miscalculations.

(Definition of “miscalculate” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"miscalculate" in American English

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miscalculateverb [ I/T ]

us /mɪsˈkæl·kjəˌleɪt/

to make a mistake when calculating an amount or judging someone or something:

[ T ] Swensen badly miscalculated the time it would take.
noun [ C ] us /mɪsˌkæl·kjəˈleɪ·ʃən/

They thought they could win the war, and that was a horrible miscalculation.

(Definition of “miscalculate” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"miscalculate" in Business English

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miscalculateverb [ I or T ]

uk /mɪsˈkælkjəleɪt/ us

ACCOUNTING to calculate an amount wrongly:

The water company had deliberately miscalculated the data it supplies to the regulator.
The insurance company admitted that it had miscalculated one of its pension funds by around £15m.

to judge a situation badly:

The biggest problem was that the airlines miscalculated demand.
badly/seriously/horribly miscalculate The Dutch had badly miscalculated just how much London would control the newly merged companies.

(Definition of “miscalculate” from the Cambridge Business English Dictionary © Cambridge University Press)