miscalculation

UK: /ˌmɪskælkjʊˈleɪʃ^ən/

WordReference Random House Learner's Dictionary of American English © 2025

mis•cal•cu•late /ˌmɪsˈkælkyəˌleɪt/   v., -lated, -lat•ing. 

1. to make a mistake in counting: [no object]
   miscalculated when adding the figures.
   [~ + object]
   He miscalculated the total.
2. to make an error in judging: [no object]
   The candidate miscalculated badly.
   [~ + object]
   She miscalculated the opposition to her proposal.

mis•cal•cu•la•tion /ˌmɪskælkyəˈleɪʃən/  n. 

[countable] A few miscalculations and your career could be over.

[uncountable] no room for miscalculation in the Olympics.

WordReference Random House Unabridged Dictionary of American English © 2025

mis•cal•cu•late  (mis kal′kyə lāt′), v.t., v.i., -lat•ed, -lat•ing. 

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

• mis-¹ + calculate 1690–1700

mis′cal•cu•la′tion, n. 
mis•cal′cu•la′tor, n.