foolhardiness
🇺🇸
/ˈfuːlhɑːrdinəs/
🇬🇧
/ˈfuːlhɑːdinəs/
Taking unnecessary risks, often in a reckless or unwise manner.
His decision to climb the mountain without proper gear was seen as sheer foolhardiness.
適切な装備なしで山に登るという彼の決断は、純粋な無謀と見なされた。