temerity

noun3

1. •
   Reckless boldness; foolish bravery.

   • Neyther the spightfull temerity and rashnes of variable fortune, nor the envious hart burning and in iurious hatred of mine enemies shold be able once to damnify me. — 1569
2. •
   Effrontery; impudence.

   • He had very nearly been guilty of the temerity of arrogating to himself another title in the presence of those he most respected. — 1820
3. •
   An act or case of reckless boldness.

   • Draper, dear lad, had the illusion of an "intellectual sympathy" between them.... Draper's temerities would always be of that kind. — 1910