Thesaurus.com
Dictionary.com
Definitions

overconfidence

[oh-ver-kon-fi-duhns] / ˈoʊ vərˈkɒn fɪ dəns /
NOUN
impudence
Synonyms
STRONGEST
cockiness disrespect
STRONG
assumption assurance audaciousness audacity boldness brashness brass brazenness cheek cheekiness chutzpah crust defiance discourtesy effrontery face familiarity forwardness gall guts gutsiness hardiness impertinence incivility insolence moxie nerve pertness presumptuousness pushiness rudeness sauciness shamelessness spunk stuff temerity
WEAK
disrespectfulness impudency nerviness sassiness
Antonyms
STRONG
care carefulness caution cowardice doubt fear humility manners meekness modesty politeness reserve respect shyness timidity

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.

He also developed what he calls the adaptive markets hypothesis, which uses the principles of evolution to explain behaviors such as loss aversion and overconfidence.

From The Wall Street Journal • Feb. 9, 2026

Warsh’s distaste for overconfidence in models and technocratic expertise has also held throughout his career.

From Barron's • Feb. 1, 2026

The only blot was a touch of overconfidence for his dismissal, falling to Abhishek after striking back-to-back boundaries off the left-arm spinner.

From BBC • Jan. 25, 2025

But they’ might have to battle overconfidence going up against what’s supposedly a far lesser team than the one they just beat.

From Los Angeles Times • Oct. 11, 2024

I’m not the kind of person who’s prone to premonitions or overconfidence, so I suspected that there was more to my flash than magical thinking.

From "If I Stay" by Gayle Forman

Vocabulary lists containing overconfidence

Psychology

Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!