overconfidence

noun over·con·fi·dence \ ˌō-vər-ˈkän-fə-dən(t)s , -ˌden(t)s \
Updated on: 15 Nov 2017

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


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