[ verb oh-ver-es-tuh-meyt; noun oh-ver-es-tuh-mit ]
See synonyms for: overestimateoverestimated on Thesaurus.com

verb (used with object),o·ver·es·ti·mat·ed, o·ver·es·ti·mat·ing.
  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.

  1. an estimate that is too high.

Origin of overestimate

First recorded in 1815–25; over- + estimate

Other words from overestimate

  • o·ver·es·ti·ma·tion, noun

Words Nearby overestimate

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use overestimate in a sentence

British Dictionary definitions for overestimate


  1. (tr) to value or estimate too highly

  1. an estimate that is too high

Derived forms of overestimate

  • overestimation, noun

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