D defs.my
Entry 2 senses Webster, 1913

Miscalculate

/mĭs-kăl'-kyəl-ātˌ/ · Mis·cal·cu·late · IPA /mɪsˈkælkjʊleɪt/
01 v. t. & i. To calculate erroneously.
  1. 1.
    To calculate erroneously.
  2. 2.
    To judge wrongly, especially about the effects of action or the likely course of events.