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English definition of “underestimate”

underestimate

verb [T]     /ˌʌndəˈrestɪmeɪt/
to think that something is or will be smaller, easier, less extreme, or less important than it really is: The company sorely underestimated demand and is struggling to expand output. Court interpreters say the skills required to do the job are underestimated.
to think that someone is worse at doing something, less intelligent, etc. than they really are: Sometimes his modest manner led people to underestimate him.
(Definition of underestimate verb from the Cambridge Business English Dictionary © Cambridge University Press)
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