temerity
Definitions
Excessive confidence or boldness; audacity.
Reckless disregard of danger; foolhardiness.
Examples
He had the temerity to question the CEO's decision in front of the entire board of directors.
It took a great deal of temerity for the young explorer to venture into the uncharted cave alone.
Synonyms
audacity boldness effrontery nerve presumption rashness gumption
Antonyms
timidity shyness caution diffidence hesitation meekness circumspection