overconfidence

noun
over·​con·​fi·​dence | \ˌō-vər-ˈkän-fə-dən(t)s, -ˌden(t)s\

Definition of overconfidence 

: an excess of confidence (as in one's abilities or judgment) : confidence that is not justified warned against overconfidence when investing People tend to overestimate their skills behind the wheel and underestimate the skills of the boobs and psychopaths driving around them, a phenomenon that psychologists call "optimism bias" and the rest of us simply call delusional overconfidence.— David H. Freedman

First Known Use of overconfidence

1622, in the meaning defined above

Keep scrolling for more

Learn More about overconfidence

Share overconfidence

Statistics for overconfidence

Look-up Popularity

Time Traveler for overconfidence

The first known use of overconfidence was in 1622

See more words from the same year

More from Merriam-Webster on overconfidence

Spanish Central: Translation of overconfidence

Nglish: Translation of overconfidence for Spanish Speakers

Comments on overconfidence

What made you want to look up overconfidence? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a trusted follower

Get Word of the Day daily email!

Test Your Vocabulary

Difficult Vocab Quiz

  • the-education-of-achilles-eugne-delacroix
  • Which is a synonym of discomfit?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!