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Synonyms

overestimate

American  
[oh-ver-es-tuh-meyt, oh-ver-es-tuh-mit] / ˌoʊ vərˈɛs təˌmeɪt, ˈoʊ vərˈɛs tə mɪt /

verb (used with object)

overestimated, overestimating
  1. to estimate at too high a value, amount, rate, or the like.

    Don't overestimate the car's trade-in value.

  2. to hold in too great esteem or to expect too much from.

    Don't overestimate him—he's no smarter than you are.


noun

  1. an estimate that is too high.

overestimate British  

verb

  1. (tr) to value or estimate too highly

"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. an estimate that is too high

"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

Other Word Forms

  • overestimation noun

Etymology

Origin of overestimate

First recorded in 1815–25; over- + estimate

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.

Armour's letter said that education was facing a gap of £250m, and he could not "overestimate the financial challenge we face in seeking to address our funding gap".

From BBC • Jan. 13, 2026

“Sometimes there’s an overestimate of voters’ desire to tax other people,” said the Tax Foundation’s Walczak.

From MarketWatch • Jan. 10, 2026

Ellenbogen: I don’t think you can overestimate the importance of the marginal cost of intelligence heading to zero, and the opportunity, agility, and efficiency it will create in service and knowledge work.

From Barron's • Jan. 9, 2026

"We compared different Earth System models with current nitrogen fixation values and found that they overestimate the nitrogen fixation rate on natural surfaces by about 50 percent," Weber explains.

From Science Daily • Jan. 5, 2026

But the curse of knowledge ensures that most writers will overestimate how standard a term has become and how wide the community is that has learned it.

From "The Sense of Style" by Steven Pinker