temerity

noun

Excessive boldness or rashness; foolhardiness or recklessness.

Extreme venturesomeness; rashness; recklessness.

Synonyms Rashness, Temerity (see rashness); venturesomeness, presumption, foolhardiness.

Unreasonable contempt of danger; extreme venturesomeness; rashness.

Reckless boldness; foolish bravery.