[ verb oh-ver-es-tuh-meyt; noun oh-ver-es-tuh-mit ]
/ verb ˌoʊ vərˈɛs təˌmeɪt; noun ˈoʊ vərˈɛs tə mɪt /

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

to estimate at too high a value, amount, rate, or the like: Don't overestimate the car's trade-in value.
to hold in too great esteem or to expect too much from: Don't overestimate him—he's no smarter than you are.


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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for overestimate

British Dictionary definitions for overestimate


verb (ˌəʊvərˈɛstɪˌmeɪt)

(tr) to value or estimate too highly

noun (ˌəʊvərˈɛstɪmɪt)

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