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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)

  • overestimates,
    present (3rd person singular)
  • overestimated,
    past participle,  past
  • overestimating
    present participle
  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

  • overestimates
    plural
  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

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Etymology

Origin of overestimate

First recorded in 1815–25; over- + estimate

Explanation

If you're confident your favorite team will win the championship even though the star player is injured, you may want to reconsider: don't let your team spirit cause you to overestimate, or overvalue, the team's abilities. When you estimate something, you make a calculation or a judgment of its value. So, when you overestimate, you assign too much value to the thing you are judging. If you overestimate how much time you have left to get to school, you could be late. Likewise, if you overestimate how prepared you are for a test, you might end up with a poor grade. This verb is the opposite of underestimate, or “to assign too little value.”

Keep Reading on Vocabulary.com

Vocabulary lists containing overestimate

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.

See Examples For:

It’s hard for investors to learn from their mistakes because they tend to underweight the importance of luck, overestimate the role of skill and “overinterpret what may be chance events,” says Alex Edmans.

From The Wall Street Journal Jul. 10, 2026

"If you are contacting a sample with a gloved hand, you're likely imparting these stearates that could overestimate your results."

From Science Daily Mar. 29, 2026

We always overestimate the speed at which these transitions disrupt existing industries.

From Barron's Mar. 27, 2026

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

“People tend to overestimate my character,” I say quietly.

From "Divergent" by Veronica Roth

NBCUniversal executive Mark Marshall publicly criticized Nielsen, saying it overestimates streaming viewership at the expense of traditional media companies’ valuations.

From The Wall Street Journal Apr. 14, 2026

Unfortunately, the price action overestimates near-term profit possibility, Reese explained while cutting the stock to Underperform from Neutral.

From Barron's Mar. 6, 2026

Yet the American public consistently overestimates the level of crime, believing it to be at historic highs that constitute an epidemic.

From Salon Aug. 19, 2025

For any shot, everyone overestimates the likelihood of it going in.

From BBC Sep. 10, 2024

Although it is commonly believed that such a reader overestimates the weight of works of fiction, the opposite is true—he underestimates it.

From Materials and Methods of Fiction With an Introduction by Brander Matthews by Clayton Meeker Hamilton

The EU said AliExpress' "overestimated the effectiveness of its system in detecting and removing illegal products".

From Barron's Jul. 20, 2026

The wearables correctly identified REM cycles, but overestimated deep sleep—the hardest stage to identify without brain-wave readings.

From The Wall Street Journal Jun. 7, 2026

He has admitted he overestimated how well his players would deal with the pressure of the Ashes, yet has to marry that with his determination to remove pressure from the dressing room.

From BBC Jun. 3, 2026

After recalibrating the data, the team found that emissions from land had been significantly overestimated in earlier models, but even after correction, land remained the dominant source.

From Science Daily Apr. 24, 2026

He was green, and he overestimated his resilience, but he was sufficiently skilled to last for sixteen weeks on little more than his wits and ten pounds of rice.

From "Into the Wild" by Jon Krakauer

That is one reason investors may be overestimating how hawkish Warsh will be on rates.

From MarketWatch Jun. 29, 2026

There's a risk of people overestimating a robot's capabilities, he says.

From BBC May 28, 2026

But investors might be overestimating the odds that central banks will raise rates in response to the war.

From Barron's Apr. 27, 2026

Filosa said at the time of the announcement that the write-downs “largely reflect the cost of overestimating the pace of the energy transition that distanced us from many car buyers’ real-world needs, means and desires.”

From The Wall Street Journal Feb. 26, 2026

My father has a bad habit of overestimating his charm—and also my mother’s patience.

From "Flush" by Carl Hiaasen

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