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overconfidence

[ oh-ver-kon-fi-duhns ]
/ ˈoʊ vərˈkɒn fɪ dəns /
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noun
the quality of having an unrealistically high opinion of one’s own judgment, ability, powers, etc.:Underestimating the enemy can induce laziness and encourage overconfidence.Psychologists have determined that overconfidence causes people to overestimate their ability to control events and underestimate risks.
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The rainy weather could not ________ my elated spirits on my graduation day.
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Origin of overconfidence

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use overconfidence in a sentence

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