temerariousness
/tɛməˈrɛriəsnəs/
noun
- The quality of being recklessly bold or daring; foolish or rash courage.
- The general warned that temerariousness in battle could get soldiers killed needlessly.
- Her temerariousness in challenging the bully surprised everyone in the schoolyard.
- The explorer's temerariousness led him into dangerous caves without proper equipment.