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Synonyms

underestimate

American  
[uhn-der-es-tuh-meyt, uhn-der-es-tuh-mit, -meyt] / ˌʌn dərˈɛs təˌmeɪt, ˌʌn dərˈɛs tə mɪt, -ˌmeɪt /

verb (used with object)

underestimated, underestimating
  1. to estimate at too low a value, rate, or the like.

    Synonyms:
    miscalculate, misjudge, underrate, undervalue

verb (used without object)

underestimated, underestimating
  1. to make an estimate lower than that which would be correct.

noun

  1. an estimate that is too low.

underestimate British  
/ ˌʌndərˈɛstɪˌmeɪt /

verb

  1. to make too low an estimate of

    he underestimated the cost

  2. to think insufficiently highly of

    to underestimate a person

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

  1. too low an estimate

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Usage

Underestimate is sometimes wrongly used where overestimate is meant: the importance of his work cannot be overestimated (not cannot be underestimated )

Other Word Forms

Etymology

Origin of underestimate

First recorded in 1805–15; under- + estimate

Explanation

To underestimate is to guess that something is worth less or is smaller than it really is. You might underestimate the size of a one-pound hamburger until you realize it's too big to fit in your stomach. When you "estimate" you take a guess at something, and when you underestimate, your guess falls short or below. If you underestimate how much something costs, you might show up at a store without enough money, and if you underestimate the strength of an opponent who is small, you might find yourself on the ground wondering what hit you. Often when we "assume" something, we make a guess based on how things appear — that's one way to underestimate.

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Vocabulary lists containing underestimate

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

But Charlo made one thing clear: Underestimate him at your own peril.

From Los Angeles Times • Sep. 28, 2023

Underestimate it and you could run short of money.

From Seattle Times • Jun. 12, 2023

She is saying: Underestimate me at your peril.

From Washington Post • Feb. 18, 2023

Underestimate “Dickinson,” just like her contemporaries did, at your peril.

From Salon • Oct. 31, 2019

Underestimate, un-dėr-es′ti-māt, v.t. to estimate at too low a rate: to set too low a value on.—n. an insufficiently high opinion.

From Chambers's Twentieth Century Dictionary (part 4 of 4: S-Z and supplements) by Various

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