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Synonyms

overconfident

American  
[oh-ver-kon-fi-duhnt] / ˈoʊ vərˈkɒn fɪ dənt /

adjective

  1. too confident.

    Synonyms:
    heedless, reckless, arrogant, bold, cocksure, certain, sure

overconfident British  
/ ˌəʊvəˈkɒnfɪdənt /

adjective

  1. excessively confident

"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

Other Word Forms

  • overconfidence noun
  • overconfidently adverb

Etymology

Origin of overconfident

First recorded in 1610–20; over- + confident

Explanation

If you're overconfident, you're so sure of yourself that you're pushy and obnoxious. It's important to be confident at a job interview, but if you're overconfident, you may come across as downright rude. There's a fine line between confidence and overconfidence: being confident is attractive and appropriate. When someone seems overconfident, though, they appear to be unrealistically sure of themselves, more arrogant than poised. Overconfident combines the prefix over-, "too much," and confident, from the Latin confidentem, "firmly trusting or self-confident."

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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.

Ricciardi would like to see some kind of compromise, between passive investors just setting automatic investments and overconfident investors trying to do too much on their own.

From MarketWatch • Mar. 21, 2026

It comes off loud, blustery, and overconfident, as if to signal a blasé disengagement with the incredible stakes of the moment.

From Slate • Mar. 6, 2026

Kapralyk praised those who sign up to fight but worried that many, like Horbenko, were overconfident.

From The Wall Street Journal • Jan. 30, 2026

“They were overconfident because they underestimated the competition.”

From Los Angeles Times • Dec. 6, 2025

“If you weren’t, you’d be overconfident, and that’s a surefire way to lose.”

From "Proud" by Ibtihaj Muhammad