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overconfident

[oh-ver-kon-fi-duh nt]
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adjective
  1. too confident.
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Origin of overconfident

First recorded in 1610–20; over- + confident
Related formso·ver·con·fi·dence, nouno·ver·con·fi·dent·ly, adverb

Synonyms

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cocksure, brash, arrogant, reckless, heedless.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for overconfident

overconfident

adjective
  1. excessively confident
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Derived Formsoverconfidence, 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