over·​es·​ti·​mate | \ ˌō-vər-ˈe-stə-ˌmāt How to pronounce overestimate (audio) \
overestimated; overestimating

Definition of overestimate

 (Entry 1 of 2)

transitive verb

: to estimate or value (someone or something) too highly … the senator had been so responsible about his potential tax liabilities that he had substantially overestimated what he owed the government.— David Burnham … our habit of overestimating our knowledge and underestimating our ignorance …— David A. Shaywitz The emotional power of this reunion can't be overestimated.— Joe Klein "I mean that I am afraid I overestimated him. I don't think that he is a painter of the first rank."— Henry James


over·​es·​ti·​mate | \ ˌō-vər-ˈe-stə-mət How to pronounce overestimate (audio) \
plural overestimates

Definition of overestimate (Entry 2 of 2)

: an estimate that is too high overestimates of the company's future profits Diamond still attacks the growth projections that the utilities have put forward, arguing that the … figures were overestimates— Norman Boucher

Synonyms & Antonyms for overestimate

Synonyms: Verb

Antonyms: Verb

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First Known Use of overestimate


1797, in the meaning defined above


1828, in the meaning defined above

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Time Traveler for overestimate

Time Traveler

The first known use of overestimate was in 1797

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Cite this Entry

“Overestimate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/overestimate. Accessed 19 Feb. 2020.

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More Definitions for overestimate


How to pronounce overestimate (audio)

English Language Learners Definition of overestimate

: to estimate (something) as being greater than the actual size, quantity, or number
: to think of (someone or something) as being greater in ability, influence, or value than that person or thing actually is


over·​es·​ti·​mate | \ ˌō-vər-ˈe-stə-ˌmāt \
overestimated; overestimating

Kids Definition of overestimate

: to estimate too highly I overestimated the number of guests.

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Thesaurus: All synonyms and antonyms for overestimate

Rhyming Dictionary: Words that rhyme with overestimate

Spanish Central: Translation of overestimate

Nglish: Translation of overestimate for Spanish Speakers

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