ENGLISH
REFERENCE

underestimate

v. · n.
US //ˈəndɝˈɛstəˌmeɪt// un·der·es·ti·mate
  1. 1 to value too low (v.)
    B2 Upper Intermediate

    to guess that a number, cost, or amount is lower than it actually is.

    to calculate or estimate a numerical value, such as cost or quantity, at a level lower than the true figure.

    Example

    The builders underestimated the cost of the repairs, so we had to pay more later.

    Example

    The finance department underestimated the quarterly expenses by nearly ten percent, leading to a significant budget shortfall in the final month.

    Usage

    Transitive verb taking a direct object, often a numerical or financial noun phrase.

    • undervalue
    • underrate
  2. 2 to judge someone's ability poorly (v.)
    B2 Upper Intermediate

    to think that someone or something is less capable or dangerous than they really are.

    to fail to appreciate the true strength, skill, or difficulty of a person or situation.

    Example

    Never underestimate your opponent in a game, even if they look tired.

    Example

    The incumbent candidate lost the election because he underestimated the public's desire for radical policy changes.

    Usage

    Often used in the imperative as a warning: 'Never underestimate...'

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  1. 3 a low guess (n.)
    C1 Advanced Formal

    a guess or calculation that is lower than the real amount.

    an assessment or calculation that is lower than the actual or required amount.

    Example

    The initial report was a serious underestimate of how many people would attend.

    Example

    The structural engineer's report proved to be a dangerous underestimate of the reinforcement required for the bridge's foundation.

    Usage

    Countable noun; frequently follows the verb 'to be' or functions as the object of 'to provide'.

    • undervaluation
Origin

From under- + estimate.

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